When their worlds fall apart over the same week, three disenchanted, cash-strapped girlfriends make a pact to attempt three wild ways to make it big ? and get rich – fast.

I really like Dkpough's ?idea of writing a separate logline for each character. ? If one of them seems so much more salient and interesting than the other two, consider putting her in the driver's seat of the plot, the protagonist. ?The other two are passengers in her plot.

For instance, who 1st proposes the wild and crazy idea of doing something wild and crazy to get rich quick?

fwiw

Something to consider is to write a logline for each character. Maybe each of them has to get a different job that is unusual or not something they want to do.
For example, for one, it could be that she has to get a job cleaning the zoo.

When their worlds fall apart over the same week, three disenchanted, cash-strapped girlfriends make a pact to attempt three wild ways to make it big ? and get rich ? fast.

I don't mind it. ?I see it as a comedy not a drama. ?I can see a crap load of comedy potential. ?The back half drifts off a bit. "make it big ? and get rich ? fast" are all sort of the same thing from a logline point of view. ? Plus disenchanted and fallen apart world, don't need both. ?Here is how I would tighten it.

When their worlds fall apart in the same week, three cash-strapped girlfriends make a pact to attempt three wild ways to get rich quick.

Would make me want to read the synopsis. ?Remember logline is the appetizer not the first course.