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Finding the Fourth Proportional to 220,766.99, 331,199.86 and 80,525.61

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Solution

The fourth proportional to 220,766.99, 331,199.86 and 80,525.61 is: 120,806.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,766.99 : 331,199.86 = 80,525.61 : x
  2. Step 2: Convert to fraction form
    220,766.99/331,199.86 = 80,525.61/x
  3. Step 3: Cross multiply
    220,766.99x = 331,199.86 × 80,525.61
  4. Step 4: Simplify right side
    220,766.99x = 26,670,070,758.41
  5. Step 5: Solve for x
    x = 26,670,070,758.41/220,766.99
  6. Step 6: Final answer
    x = 120,806.42

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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.