Finding the Fourth Proportional to 207,991,467.85, 287,024,717.78 and 115,169,982.79
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Solution
The fourth proportional to 207,991,467.85, 287,024,717.78 and 115,169,982.79 is: 158,932,633.86
Step by Step Solution
- Step 1: Write the proportion equation
207,991,467.85 : 287,024,717.78 = 115,169,982.79 : x - Step 2: Convert to fraction form
207,991,467.85/287,024,717.78 = 115,169,982.79/x - Step 3: Cross multiply
207,991,467.85x = 287,024,717.78 × 115,169,982.79 - Step 4: Simplify right side
207,991,467.85x = 33,056,631,805,733,792 - Step 5: Solve for x
x = 33,056,631,805,733,792/207,991,467.85 - Step 6: Final answer
x = 158,932,633.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.