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Finding the Fourth Proportional to 391,341.68, 587,109.72 and 110,861.36

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Solution

The fourth proportional to 391,341.68, 587,109.72 and 110,861.36 is: 166,319.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,341.68 : 587,109.72 = 110,861.36 : x
  2. Step 2: Convert to fraction form
    391,341.68/587,109.72 = 110,861.36/x
  3. Step 3: Cross multiply
    391,341.68x = 587,109.72 × 110,861.36
  4. Step 4: Simplify right side
    391,341.68x = 65,087,782,028.42
  5. Step 5: Solve for x
    x = 65,087,782,028.42/391,341.68
  6. Step 6: Final answer
    x = 166,319.58

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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.