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Finding the Fourth Proportional to 419,862.15, 629,793.23 and 251,900.55

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Solution

The fourth proportional to 419,862.15, 629,793.23 and 251,900.55 is: 377,850.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,862.15 : 629,793.23 = 251,900.55 : x
  2. Step 2: Convert to fraction form
    419,862.15/629,793.23 = 251,900.55/x
  3. Step 3: Cross multiply
    419,862.15x = 629,793.23 × 251,900.55
  4. Step 4: Simplify right side
    419,862.15x = 158,645,259,763.77
  5. Step 5: Solve for x
    x = 158,645,259,763.77/419,862.15
  6. Step 6: Final answer
    x = 377,850.83

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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.