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Finding the Fourth Proportional to 424,972.80, 636,778.80 and 225,032.40

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Solution

The fourth proportional to 424,972.80, 636,778.80 and 225,032.40 is: 337,188.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,972.80 : 636,778.80 = 225,032.40 : x
  2. Step 2: Convert to fraction form
    424,972.80/636,778.80 = 225,032.40/x
  3. Step 3: Cross multiply
    424,972.80x = 636,778.80 × 225,032.40
  4. Step 4: Simplify right side
    424,972.80x = 143,295,861,633.12
  5. Step 5: Solve for x
    x = 143,295,861,633.12/424,972.80
  6. Step 6: Final answer
    x = 337,188.31

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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.