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Finding the Fourth Proportional to 424,354.07, 636,551 and 140,069.41

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Solution

The fourth proportional to 424,354.07, 636,551 and 140,069.41 is: 210,110.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,354.07 : 636,551 = 140,069.41 : x
  2. Step 2: Convert to fraction form
    424,354.07/636,551 = 140,069.41/x
  3. Step 3: Cross multiply
    424,354.07x = 636,551 × 140,069.41
  4. Step 4: Simplify right side
    424,354.07x = 89,161,323,004.91
  5. Step 5: Solve for x
    x = 89,161,323,004.91/424,354.07
  6. Step 6: Final answer
    x = 210,110.68

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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.