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Finding the Fourth Proportional to 260,808.90, 391,359.15 and 111,023.70

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Solution

The fourth proportional to 260,808.90, 391,359.15 and 111,023.70 is: 166,597.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,808.90 : 391,359.15 = 111,023.70 : x
  2. Step 2: Convert to fraction form
    260,808.90/391,359.15 = 111,023.70/x
  3. Step 3: Cross multiply
    260,808.90x = 391,359.15 × 111,023.70
  4. Step 4: Simplify right side
    260,808.90x = 43,450,140,861.86
  5. Step 5: Solve for x
    x = 43,450,140,861.86/260,808.90
  6. Step 6: Final answer
    x = 166,597.62

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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.