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Finding the Fourth Proportional to 486,966.20, 730,103.70 and 220,854.20

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Solution

The fourth proportional to 486,966.20, 730,103.70 and 220,854.20 is: 331,124.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,966.20 : 730,103.70 = 220,854.20 : x
  2. Step 2: Convert to fraction form
    486,966.20/730,103.70 = 220,854.20/x
  3. Step 3: Cross multiply
    486,966.20x = 730,103.70 × 220,854.20
  4. Step 4: Simplify right side
    486,966.20x = 161,246,468,580.54
  5. Step 5: Solve for x
    x = 161,246,468,580.54/486,966.20
  6. Step 6: Final answer
    x = 331,124.56

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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.