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Finding the Fourth Proportional to 486,951.20, 730,081.20 and 220,839.20

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Solution

The fourth proportional to 486,951.20, 730,081.20 and 220,839.20 is: 331,102.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,951.20 : 730,081.20 = 220,839.20 : x
  2. Step 2: Convert to fraction form
    486,951.20/730,081.20 = 220,839.20/x
  3. Step 3: Cross multiply
    486,951.20x = 730,081.20 × 220,839.20
  4. Step 4: Simplify right side
    486,951.20x = 161,230,548,143.04
  5. Step 5: Solve for x
    x = 161,230,548,143.04/486,951.20
  6. Step 6: Final answer
    x = 331,102.07

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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.