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Finding the Fourth Proportional to 391,517.25, 587,237.88 and 125,206.26

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Solution

The fourth proportional to 391,517.25, 587,237.88 and 125,206.26 is: 187,797.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,517.25 : 587,237.88 = 125,206.26 : x
  2. Step 2: Convert to fraction form
    391,517.25/587,237.88 = 125,206.26/x
  3. Step 3: Cross multiply
    391,517.25x = 587,237.88 × 125,206.26
  4. Step 4: Simplify right side
    391,517.25x = 73,525,858,685.13
  5. Step 5: Solve for x
    x = 73,525,858,685.13/391,517.25
  6. Step 6: Final answer
    x = 187,797.24

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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.