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Finding the Fourth Proportional to 363,794.31, 545,558.42 and 139,043.61

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Solution

The fourth proportional to 363,794.31, 545,558.42 and 139,043.61 is: 208,514.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,794.31 : 545,558.42 = 139,043.61 : x
  2. Step 2: Convert to fraction form
    363,794.31/545,558.42 = 139,043.61/x
  3. Step 3: Cross multiply
    363,794.31x = 545,558.42 × 139,043.61
  4. Step 4: Simplify right side
    363,794.31x = 75,856,411,487.48
  5. Step 5: Solve for x
    x = 75,856,411,487.48/363,794.31
  6. Step 6: Final answer
    x = 208,514.56

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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.