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Finding the Fourth Proportional to 260,793.97, 391,190.96 and 142,400.73

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Solution

The fourth proportional to 260,793.97, 391,190.96 and 142,400.73 is: 213,601.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,793.97 : 391,190.96 = 142,400.73 : x
  2. Step 2: Convert to fraction form
    260,793.97/391,190.96 = 142,400.73/x
  3. Step 3: Cross multiply
    260,793.97x = 391,190.96 × 142,400.73
  4. Step 4: Simplify right side
    260,793.97x = 55,705,877,162.44
  5. Step 5: Solve for x
    x = 55,705,877,162.44/260,793.97
  6. Step 6: Final answer
    x = 213,601.09

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1.5x scale

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.