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Finding the Fourth Proportional to 402,611.80, 603,993.90 and 132,755.44

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Solution

The fourth proportional to 402,611.80, 603,993.90 and 132,755.44 is: 199,158.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,611.80 : 603,993.90 = 132,755.44 : x
  2. Step 2: Convert to fraction form
    402,611.80/603,993.90 = 132,755.44/x
  3. Step 3: Cross multiply
    402,611.80x = 603,993.90 × 132,755.44
  4. Step 4: Simplify right side
    402,611.80x = 80,183,475,951.82
  5. Step 5: Solve for x
    x = 80,183,475,951.82/402,611.80
  6. Step 6: Final answer
    x = 199,158.29

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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.