Home / 431,377.14-647,067.38-131,856.56

Finding the Fourth Proportional to 431,377.14, 647,067.38 and 131,856.56

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Solution

The fourth proportional to 431,377.14, 647,067.38 and 131,856.56 is: 197,785.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,377.14 : 647,067.38 = 131,856.56 : x
  2. Step 2: Convert to fraction form
    431,377.14/647,067.38 = 131,856.56/x
  3. Step 3: Cross multiply
    431,377.14x = 647,067.38 × 131,856.56
  4. Step 4: Simplify right side
    431,377.14x = 85,320,074,920.39
  5. Step 5: Solve for x
    x = 85,320,074,920.39/431,377.14
  6. Step 6: Final answer
    x = 197,785.34

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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.