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Finding the Fourth Proportional to 363,793.80, 545,557.66 and 139,043.10

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Solution

The fourth proportional to 363,793.80, 545,557.66 and 139,043.10 is: 208,513.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,793.80 : 545,557.66 = 139,043.10 : x
  2. Step 2: Convert to fraction form
    363,793.80/545,557.66 = 139,043.10/x
  3. Step 3: Cross multiply
    363,793.80x = 545,557.66 × 139,043.10
  4. Step 4: Simplify right side
    363,793.80x = 75,856,028,275.15
  5. Step 5: Solve for x
    x = 75,856,028,275.15/363,793.80
  6. Step 6: Final answer
    x = 208,513.80

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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.