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Finding the Fourth Proportional to 424,573.02, 636,757.38 and 124,972.20

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Solution

The fourth proportional to 424,573.02, 636,757.38 and 124,972.20 is: 187,428.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,573.02 : 636,757.38 = 124,972.20 : x
  2. Step 2: Convert to fraction form
    424,573.02/636,757.38 = 124,972.20/x
  3. Step 3: Cross multiply
    424,573.02x = 636,757.38 × 124,972.20
  4. Step 4: Simplify right side
    424,573.02x = 79,576,970,644.84
  5. Step 5: Solve for x
    x = 79,576,970,644.84/424,573.02
  6. Step 6: Final answer
    x = 187,428.23

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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.