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Finding the Fourth Proportional to 363,419.70, 545,129.55 and 251,445.30

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Solution

The fourth proportional to 363,419.70, 545,129.55 and 251,445.30 is: 377,167.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,419.70 : 545,129.55 = 251,445.30 : x
  2. Step 2: Convert to fraction form
    363,419.70/545,129.55 = 251,445.30/x
  3. Step 3: Cross multiply
    363,419.70x = 545,129.55 × 251,445.30
  4. Step 4: Simplify right side
    363,419.70x = 137,070,263,238.62
  5. Step 5: Solve for x
    x = 137,070,263,238.62/363,419.70
  6. Step 6: Final answer
    x = 377,167.95

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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.