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Finding the Fourth Proportional to 260,794.60, 391,046.10 and 120,379.48

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Solution

The fourth proportional to 260,794.60, 391,046.10 and 120,379.48 is: 180,501.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,794.60 : 391,046.10 = 120,379.48 : x
  2. Step 2: Convert to fraction form
    260,794.60/391,046.10 = 120,379.48/x
  3. Step 3: Cross multiply
    260,794.60x = 391,046.10 × 120,379.48
  4. Step 4: Simplify right side
    260,794.60x = 47,073,926,174.03
  5. Step 5: Solve for x
    x = 47,073,926,174.03/260,794.60
  6. Step 6: Final answer
    x = 180,501.92

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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.