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Finding the Fourth Proportional to 363,142.20, 544,538.34 and 126,479.64

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Solution

The fourth proportional to 363,142.20, 544,538.34 and 126,479.64 is: 189,658.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,142.20 : 544,538.34 = 126,479.64 : x
  2. Step 2: Convert to fraction form
    363,142.20/544,538.34 = 126,479.64/x
  3. Step 3: Cross multiply
    363,142.20x = 544,538.34 × 126,479.64
  4. Step 4: Simplify right side
    363,142.20x = 68,873,013,209.40
  5. Step 5: Solve for x
    x = 68,873,013,209.40/363,142.20
  6. Step 6: Final answer
    x = 189,658.52

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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.