Home / 321,418.38-482,015.78-131,824.92

Finding the Fourth Proportional to 321,418.38, 482,015.78 and 131,824.92

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Solution

The fourth proportional to 321,418.38, 482,015.78 and 131,824.92 is: 197,691.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,418.38 : 482,015.78 = 131,824.92 : x
  2. Step 2: Convert to fraction form
    321,418.38/482,015.78 = 131,824.92/x
  3. Step 3: Cross multiply
    321,418.38x = 482,015.78 × 131,824.92
  4. Step 4: Simplify right side
    321,418.38x = 63,541,691,637.24
  5. Step 5: Solve for x
    x = 63,541,691,637.24/321,418.38
  6. Step 6: Final answer
    x = 197,691.53

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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.