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Finding the Fourth Proportional to 424,635.75, 636,874.49 and 136,452.39

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Solution

The fourth proportional to 424,635.75, 636,874.49 and 136,452.39 is: 204,653.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,635.75 : 636,874.49 = 136,452.39 : x
  2. Step 2: Convert to fraction form
    424,635.75/636,874.49 = 136,452.39/x
  3. Step 3: Cross multiply
    424,635.75x = 636,874.49 × 136,452.39
  4. Step 4: Simplify right side
    424,635.75x = 86,903,044,243.38
  5. Step 5: Solve for x
    x = 86,903,044,243.38/424,635.75
  6. Step 6: Final answer
    x = 204,653.15

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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.