Finding the Fourth Proportional to 391,138.23, 539,752.08 and 240,206.07
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Solution
The fourth proportional to 391,138.23, 539,752.08 and 240,206.07 is: 331,472.91
Step by Step Solution
- Step 1: Write the proportion equation
391,138.23 : 539,752.08 = 240,206.07 : x - Step 2: Convert to fraction form
391,138.23/539,752.08 = 240,206.07/x - Step 3: Cross multiply
391,138.23x = 539,752.08 × 240,206.07 - Step 4: Simplify right side
391,138.23x = 129,651,725,911.13 - Step 5: Solve for x
x = 129,651,725,911.13/391,138.23 - Step 6: Final answer
x = 331,472.91
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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.