Finding the Fourth Proportional to 387,090.26, 534,170.84 and 217,331.54
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Solution
The fourth proportional to 387,090.26, 534,170.84 and 217,331.54 is: 299,909.82
Step by Step Solution
- Step 1: Write the proportion equation
387,090.26 : 534,170.84 = 217,331.54 : x - Step 2: Convert to fraction form
387,090.26/534,170.84 = 217,331.54/x - Step 3: Cross multiply
387,090.26x = 534,170.84 × 217,331.54 - Step 4: Simplify right side
387,090.26x = 116,092,171,280.29 - Step 5: Solve for x
x = 116,092,171,280.29/387,090.26 - Step 6: Final answer
x = 299,909.82
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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.