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Finding the Fourth Proportional to 417,898.73, 626,938.11 and 129,704.38

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Solution

The fourth proportional to 417,898.73, 626,938.11 and 129,704.38 is: 194,584.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,898.73 : 626,938.11 = 129,704.38 : x
  2. Step 2: Convert to fraction form
    417,898.73/626,938.11 = 129,704.38/x
  3. Step 3: Cross multiply
    417,898.73x = 626,938.11 × 129,704.38
  4. Step 4: Simplify right side
    417,898.73x = 81,316,617,288.58
  5. Step 5: Solve for x
    x = 81,316,617,288.58/417,898.73
  6. Step 6: Final answer
    x = 194,584.50

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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.