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Finding the Fourth Proportional to 424,580.02, 636,767.88 and 124,979.20

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Solution

The fourth proportional to 424,580.02, 636,767.88 and 124,979.20 is: 187,438.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,580.02 : 636,767.88 = 124,979.20 : x
  2. Step 2: Convert to fraction form
    424,580.02/636,767.88 = 124,979.20/x
  3. Step 3: Cross multiply
    424,580.02x = 636,767.88 × 124,979.20
  4. Step 4: Simplify right side
    424,580.02x = 79,582,740,228.10
  5. Step 5: Solve for x
    x = 79,582,740,228.10/424,580.02
  6. Step 6: Final answer
    x = 187,438.73

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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.