Home / 394,320.28-591,424.83-128,084.01

Finding the Fourth Proportional to 394,320.28, 591,424.83 and 128,084.01

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Solution

The fourth proportional to 394,320.28, 591,424.83 and 128,084.01 is: 192,107.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,320.28 : 591,424.83 = 128,084.01 : x
  2. Step 2: Convert to fraction form
    394,320.28/591,424.83 = 128,084.01/x
  3. Step 3: Cross multiply
    394,320.28x = 591,424.83 × 128,084.01
  4. Step 4: Simplify right side
    394,320.28x = 75,752,063,839.97
  5. Step 5: Solve for x
    x = 75,752,063,839.97/394,320.28
  6. Step 6: Final answer
    x = 192,107.96

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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.