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Finding the Fourth Proportional to 391,372.12, 587,063.58 and 110,889.10

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Solution

The fourth proportional to 391,372.12, 587,063.58 and 110,889.10 is: 166,335.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,372.12 : 587,063.58 = 110,889.10 : x
  2. Step 2: Convert to fraction form
    391,372.12/587,063.58 = 110,889.10/x
  3. Step 3: Cross multiply
    391,372.12x = 587,063.58 × 110,889.10
  4. Step 4: Simplify right side
    391,372.12x = 65,098,952,028.98
  5. Step 5: Solve for x
    x = 65,098,952,028.98/391,372.12
  6. Step 6: Final answer
    x = 166,335.18

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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.