Home / 394,285.20-591,719.40-261,121.20

Finding the Fourth Proportional to 394,285.20, 591,719.40 and 261,121.20

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Solution

The fourth proportional to 394,285.20, 591,719.40 and 261,121.20 is: 391,874.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,285.20 : 591,719.40 = 261,121.20 : x
  2. Step 2: Convert to fraction form
    394,285.20/591,719.40 = 261,121.20/x
  3. Step 3: Cross multiply
    394,285.20x = 591,719.40 × 261,121.20
  4. Step 4: Simplify right side
    394,285.20x = 154,510,479,791.28
  5. Step 5: Solve for x
    x = 154,510,479,791.28/394,285.20
  6. Step 6: Final answer
    x = 391,874.92

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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.