Unfortunately there is no way using native Quick Base functionality to change the size of a Chart on a form. If you're adept at JS/HTML/CSS, it's possible you could create a code page where you could size the charts as appropriate. I don't know if they still do, but at one point Quick Base was using the reporting/charting engine from HighCharts, if you want to investigate their API documentation.
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Blake Harrison
bharrison@datablender.io
DataBlender - Quick Base Solution Provider
Atlanta GA
404.800.1702 /
http://datablender.io/------------------------------