Home / 394,279.20-591,710.40-261,115.20

Finding the Fourth Proportional to 394,279.20, 591,710.40 and 261,115.20

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Solution

The fourth proportional to 394,279.20, 591,710.40 and 261,115.20 is: 391,865.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,279.20 : 591,710.40 = 261,115.20 : x
  2. Step 2: Convert to fraction form
    394,279.20/591,710.40 = 261,115.20/x
  3. Step 3: Cross multiply
    394,279.20x = 591,710.40 × 261,115.20
  4. Step 4: Simplify right side
    394,279.20x = 154,504,579,438.08
  5. Step 5: Solve for x
    x = 154,504,579,438.08/394,279.20
  6. Step 6: Final answer
    x = 391,865.91

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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.