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Finding the Fourth Proportional to 259,974.76, 389,961.11 and 82,495.61

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Solution

The fourth proportional to 259,974.76, 389,961.11 and 82,495.61 is: 123,743.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,974.76 : 389,961.11 = 82,495.61 : x
  2. Step 2: Convert to fraction form
    259,974.76/389,961.11 = 82,495.61/x
  3. Step 3: Cross multiply
    259,974.76x = 389,961.11 × 82,495.61
  4. Step 4: Simplify right side
    259,974.76x = 32,170,079,645.73
  5. Step 5: Solve for x
    x = 32,170,079,645.73/259,974.76
  6. Step 6: Final answer
    x = 123,743.09

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1.5x scale

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.