Home / 260,758.20-391,185.90-83,315.55

Finding the Fourth Proportional to 260,758.20, 391,185.90 and 83,315.55

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Solution

The fourth proportional to 260,758.20, 391,185.90 and 83,315.55 is: 124,988.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,758.20 : 391,185.90 = 83,315.55 : x
  2. Step 2: Convert to fraction form
    260,758.20/391,185.90 = 83,315.55/x
  3. Step 3: Cross multiply
    260,758.20x = 391,185.90 × 83,315.55
  4. Step 4: Simplify right side
    260,758.20x = 32,591,868,410.75
  5. Step 5: Solve for x
    x = 32,591,868,410.75/260,758.20
  6. Step 6: Final answer
    x = 124,988.85

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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.