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Finding the Fourth Proportional to 391,574.01, 587,351.70 and 125,333.49

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Solution

The fourth proportional to 391,574.01, 587,351.70 and 125,333.49 is: 187,997.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,574.01 : 587,351.70 = 125,333.49 : x
  2. Step 2: Convert to fraction form
    391,574.01/587,351.70 = 125,333.49/x
  3. Step 3: Cross multiply
    391,574.01x = 587,351.70 × 125,333.49
  4. Step 4: Simplify right side
    391,574.01x = 73,614,838,418.43
  5. Step 5: Solve for x
    x = 73,614,838,418.43/391,574.01
  6. Step 6: Final answer
    x = 187,997.25

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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.