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Finding the Fourth Proportional to 262,990.44, 394,213.50 and 129,692.52

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Solution

The fourth proportional to 262,990.44, 394,213.50 and 129,692.52 is: 194,404.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,990.44 : 394,213.50 = 129,692.52 : x
  2. Step 2: Convert to fraction form
    262,990.44/394,213.50 = 129,692.52/x
  3. Step 3: Cross multiply
    262,990.44x = 394,213.50 × 129,692.52
  4. Step 4: Simplify right side
    262,990.44x = 51,126,542,233.02
  5. Step 5: Solve for x
    x = 51,126,542,233.02/262,990.44
  6. Step 6: Final answer
    x = 194,404.57

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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.