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Finding the Fourth Proportional to 391,755.82, 587,617.30 and 125,510.44

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Solution

The fourth proportional to 391,755.82, 587,617.30 and 125,510.44 is: 188,260.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,755.82 : 587,617.30 = 125,510.44 : x
  2. Step 2: Convert to fraction form
    391,755.82/587,617.30 = 125,510.44/x
  3. Step 3: Cross multiply
    391,755.82x = 587,617.30 × 125,510.44
  4. Step 4: Simplify right side
    391,755.82x = 73,752,104,091.79
  5. Step 5: Solve for x
    x = 73,752,104,091.79/391,755.82
  6. Step 6: Final answer
    x = 188,260.39

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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.