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Finding the Fourth Proportional to 220,745.21, 331,167.18 and 80,503.84

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Solution

The fourth proportional to 220,745.21, 331,167.18 and 80,503.84 is: 120,773.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,745.21 : 331,167.18 = 80,503.84 : x
  2. Step 2: Convert to fraction form
    220,745.21/331,167.18 = 80,503.84/x
  3. Step 3: Cross multiply
    220,745.21x = 331,167.18 × 80,503.84
  4. Step 4: Simplify right side
    220,745.21x = 26,660,229,671.97
  5. Step 5: Solve for x
    x = 26,660,229,671.97/220,745.21
  6. Step 6: Final answer
    x = 120,773.76

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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.