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Finding the Fourth Proportional to 431,570.95, 647,329.29 and 132,027.73

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Solution

The fourth proportional to 431,570.95, 647,329.29 and 132,027.73 is: 198,033.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,570.95 : 647,329.29 = 132,027.73 : x
  2. Step 2: Convert to fraction form
    431,570.95/647,329.29 = 132,027.73/x
  3. Step 3: Cross multiply
    431,570.95x = 647,329.29 × 132,027.73
  4. Step 4: Simplify right side
    431,570.95x = 85,465,416,721.21
  5. Step 5: Solve for x
    x = 85,465,416,721.21/431,570.95
  6. Step 6: Final answer
    x = 198,033.29

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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.