Finding the Fourth Proportional to 391,135.23, 539,747.96 and 240,203.07
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Solution
The fourth proportional to 391,135.23, 539,747.96 and 240,203.07 is: 331,468.78
Step by Step Solution
- Step 1: Write the proportion equation
391,135.23 : 539,747.96 = 240,203.07 : x - Step 2: Convert to fraction form
391,135.23/539,747.96 = 240,203.07/x - Step 3: Cross multiply
391,135.23x = 539,747.96 × 240,203.07 - Step 4: Simplify right side
391,135.23x = 129,649,115,817.22 - Step 5: Solve for x
x = 129,649,115,817.22/391,135.23 - Step 6: Final answer
x = 331,468.78
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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.