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Finding the Fourth Proportional to 442,105.60, 663,182.08 and 126,608.64

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Solution

The fourth proportional to 442,105.60, 663,182.08 and 126,608.64 is: 189,919.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,105.60 : 663,182.08 = 126,608.64 : x
  2. Step 2: Convert to fraction form
    442,105.60/663,182.08 = 126,608.64/x
  3. Step 3: Cross multiply
    442,105.60x = 663,182.08 × 126,608.64
  4. Step 4: Simplify right side
    442,105.60x = 83,964,581,221.17
  5. Step 5: Solve for x
    x = 83,964,581,221.17/442,105.60
  6. Step 6: Final answer
    x = 189,919.74

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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.