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Finding the Fourth Proportional to 132,440.64, 198,660.96 and 38,947.20

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Solution

The fourth proportional to 132,440.64, 198,660.96 and 38,947.20 is: 58,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,440.64 : 198,660.96 = 38,947.20 : x
  2. Step 2: Convert to fraction form
    132,440.64/198,660.96 = 38,947.20/x
  3. Step 3: Cross multiply
    132,440.64x = 198,660.96 × 38,947.20
  4. Step 4: Simplify right side
    132,440.64x = 7,737,288,141.31
  5. Step 5: Solve for x
    x = 7,737,288,141.31/132,440.64
  6. Step 6: Final answer
    x = 58,420.80

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1.5x scale

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.