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Finding the Fourth Proportional to 260,770.80, 391,156.20 and 243,145.20

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Solution

The fourth proportional to 260,770.80, 391,156.20 and 243,145.20 is: 364,717.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,770.80 : 391,156.20 = 243,145.20 : x
  2. Step 2: Convert to fraction form
    260,770.80/391,156.20 = 243,145.20/x
  3. Step 3: Cross multiply
    260,770.80x = 391,156.20 × 243,145.20
  4. Step 4: Simplify right side
    260,770.80x = 95,107,752,480.24
  5. Step 5: Solve for x
    x = 95,107,752,480.24/260,770.80
  6. Step 6: Final answer
    x = 364,717.80

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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.