Home / 394,209.64-591,306.09-127,969.75

Finding the Fourth Proportional to 394,209.64, 591,306.09 and 127,969.75

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Solution

The fourth proportional to 394,209.64, 591,306.09 and 127,969.75 is: 191,951.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,209.64 : 591,306.09 = 127,969.75 : x
  2. Step 2: Convert to fraction form
    394,209.64/591,306.09 = 127,969.75/x
  3. Step 3: Cross multiply
    394,209.64x = 591,306.09 × 127,969.75
  4. Step 4: Simplify right side
    394,209.64x = 75,669,292,510.78
  5. Step 5: Solve for x
    x = 75,669,292,510.78/394,209.64
  6. Step 6: Final answer
    x = 191,951.91

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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.