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Finding the Fourth Proportional to 435,562.56, 653,347.17 and 120,036.78

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Solution

The fourth proportional to 435,562.56, 653,347.17 and 120,036.78 is: 180,056.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    435,562.56 : 653,347.17 = 120,036.78 : x
  2. Step 2: Convert to fraction form
    435,562.56/653,347.17 = 120,036.78/x
  3. Step 3: Cross multiply
    435,562.56x = 653,347.17 × 120,036.78
  4. Step 4: Simplify right side
    435,562.56x = 78,425,690,508.91
  5. Step 5: Solve for x
    x = 78,425,690,508.91/435,562.56
  6. Step 6: Final answer
    x = 180,056.09

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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.