Home / 431,385.06-647,079.19-131,864.48

Finding the Fourth Proportional to 431,385.06, 647,079.19 and 131,864.48

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Solution

The fourth proportional to 431,385.06, 647,079.19 and 131,864.48 is: 197,797.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,385.06 : 647,079.19 = 131,864.48 : x
  2. Step 2: Convert to fraction form
    431,385.06/647,079.19 = 131,864.48/x
  3. Step 3: Cross multiply
    431,385.06x = 647,079.19 × 131,864.48
  4. Step 4: Simplify right side
    431,385.06x = 85,326,757,343.11
  5. Step 5: Solve for x
    x = 85,326,757,343.11/431,385.06
  6. Step 6: Final answer
    x = 197,797.20

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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.