Home / 260,849.20-391,403.40-103,082.80

Finding the Fourth Proportional to 260,849.20, 391,403.40 and 103,082.80

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Solution

The fourth proportional to 260,849.20, 391,403.40 and 103,082.80 is: 154,675.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,849.20 : 391,403.40 = 103,082.80 : x
  2. Step 2: Convert to fraction form
    260,849.20/391,403.40 = 103,082.80/x
  3. Step 3: Cross multiply
    260,849.20x = 391,403.40 × 103,082.80
  4. Step 4: Simplify right side
    260,849.20x = 40,346,958,401.52
  5. Step 5: Solve for x
    x = 40,346,958,401.52/260,849.20
  6. Step 6: Final answer
    x = 154,675.42

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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.