Home / 431,738.60-647,551.20-132,249.20

Finding the Fourth Proportional to 431,738.60, 647,551.20 and 132,249.20

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Solution

The fourth proportional to 431,738.60, 647,551.20 and 132,249.20 is: 198,356.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,738.60 : 647,551.20 = 132,249.20 : x
  2. Step 2: Convert to fraction form
    431,738.60/647,551.20 = 132,249.20/x
  3. Step 3: Cross multiply
    431,738.60x = 647,551.20 × 132,249.20
  4. Step 4: Simplify right side
    431,738.60x = 85,638,128,159.04
  5. Step 5: Solve for x
    x = 85,638,128,159.04/431,738.60
  6. Step 6: Final answer
    x = 198,356.43

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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.