Finding the Fourth Proportional to 431,070.98, 646,606.47 and 131,553.09
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Solution
The fourth proportional to 431,070.98, 646,606.47 and 131,553.09 is: 197,329.64
Step by Step Solution
- Step 1: Write the proportion equation
431,070.98 : 646,606.47 = 131,553.09 : x - Step 2: Convert to fraction form
431,070.98/646,606.47 = 131,553.09/x - Step 3: Cross multiply
431,070.98x = 646,606.47 × 131,553.09 - Step 4: Simplify right side
431,070.98x = 85,063,079,142.49 - Step 5: Solve for x
x = 85,063,079,142.49/431,070.98 - Step 6: Final answer
x = 197,329.64
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Similar ratio
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1.5x scale
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.