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Finding the Fourth Proportional to 431,575.80, 647,441.52 and 132,050.76

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Solution

The fourth proportional to 431,575.80, 647,441.52 and 132,050.76 is: 198,099.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,575.80 : 647,441.52 = 132,050.76 : x
  2. Step 2: Convert to fraction form
    431,575.80/647,441.52 = 132,050.76/x
  3. Step 3: Cross multiply
    431,575.80x = 647,441.52 × 132,050.76
  4. Step 4: Simplify right side
    431,575.80x = 85,495,144,771.56
  5. Step 5: Solve for x
    x = 85,495,144,771.56/431,575.80
  6. Step 6: Final answer
    x = 198,099.95

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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.