Finding the Fourth Proportional to 391,138.98, 539,753.12 and 240,206.82
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Solution
The fourth proportional to 391,138.98, 539,753.12 and 240,206.82 is: 331,473.94
Step by Step Solution
- Step 1: Write the proportion equation
391,138.98 : 539,753.12 = 240,206.82 : x - Step 2: Convert to fraction form
391,138.98/539,753.12 = 240,206.82/x - Step 3: Cross multiply
391,138.98x = 539,753.12 × 240,206.82 - Step 4: Simplify right side
391,138.98x = 129,652,379,339.24 - Step 5: Solve for x
x = 129,652,379,339.24/391,138.98 - Step 6: Final answer
x = 331,473.94
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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.