Finding the Fourth Proportional to 287,695.12, 431,542.08 and 77,333.08
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Solution
The fourth proportional to 287,695.12, 431,542.08 and 77,333.08 is: 115,999.46
Step by Step Solution
- Step 1: Write the proportion equation
287,695.12 : 431,542.08 = 77,333.08 : x - Step 2: Convert to fraction form
287,695.12/431,542.08 = 77,333.08/x - Step 3: Cross multiply
287,695.12x = 431,542.08 × 77,333.08 - Step 4: Simplify right side
287,695.12x = 33,372,478,196.01 - Step 5: Solve for x
x = 33,372,478,196.01/287,695.12 - Step 6: Final answer
x = 115,999.46
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.