Finding the Fourth Proportional to 207,991,467.60, 287,024,717.43 and 115,169,982.54
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Solution
The fourth proportional to 207,991,467.60, 287,024,717.43 and 115,169,982.54 is: 158,932,633.52
Step by Step Solution
- Step 1: Write the proportion equation
207,991,467.60 : 287,024,717.43 = 115,169,982.54 : x - Step 2: Convert to fraction form
207,991,467.60/287,024,717.43 = 115,169,982.54/x - Step 3: Cross multiply
207,991,467.60x = 287,024,717.43 × 115,169,982.54 - Step 4: Simplify right side
207,991,467.60x = 33,056,631,694,961,536 - Step 5: Solve for x
x = 33,056,631,694,961,536/207,991,467.60 - Step 6: Final answer
x = 158,932,633.52
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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.