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Finding the Fourth Proportional to 439,755.20, 658,855.20 and 372,881.60

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Solution

The fourth proportional to 439,755.20, 658,855.20 and 372,881.60 is: 558,663.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,755.20 : 658,855.20 = 372,881.60 : x
  2. Step 2: Convert to fraction form
    439,755.20/658,855.20 = 372,881.60/x
  3. Step 3: Cross multiply
    439,755.20x = 658,855.20 × 372,881.60
  4. Step 4: Simplify right side
    439,755.20x = 245,674,981,144.32
  5. Step 5: Solve for x
    x = 245,674,981,144.32/439,755.20
  6. Step 6: Final answer
    x = 558,663.05

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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.