UBUNTU OSX partition

[M. P.]

I have UBUNTU and OSX installed on a Mac. Both operating systems are working perfectly but I am new to linux and am wondering if my partition scheme makes sense. The hard drive is 251 GB. Partition 1 says EFI 210 MB FAT. The second partition says MAC 211 GB APFS. Partition 3 says Swap 4.0 GB. Partition 4 says 36 GB Ext 4.  Is this correct? It would seem to me that I would try to split the hard drive more evenly between OSX and UBUNTU. If changing the partition makes sense can I do this in either UBUNTO or OSX without reinstalling?