Home / 431,680.30-647,151.24-165,631.76

Finding the Fourth Proportional to 431,680.30, 647,151.24 and 165,631.76

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Solution

The fourth proportional to 431,680.30, 647,151.24 and 165,631.76 is: 248,305.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,680.30 : 647,151.24 = 165,631.76 : x
  2. Step 2: Convert to fraction form
    431,680.30/647,151.24 = 165,631.76/x
  3. Step 3: Cross multiply
    431,680.30x = 647,151.24 × 165,631.76
  4. Step 4: Simplify right side
    431,680.30x = 107,188,798,867.38
  5. Step 5: Solve for x
    x = 107,188,798,867.38/431,680.30
  6. Step 6: Final answer
    x = 248,305.98

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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.