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Finding the Fourth Proportional to 363,672.47, 544,942.91 and 138,910.22

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Solution

The fourth proportional to 363,672.47, 544,942.91 and 138,910.22 is: 208,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,672.47 : 544,942.91 = 138,910.22 : x
  2. Step 2: Convert to fraction form
    363,672.47/544,942.91 = 138,910.22/x
  3. Step 3: Cross multiply
    363,672.47x = 544,942.91 × 138,910.22
  4. Step 4: Simplify right side
    363,672.47x = 75,698,141,465.57
  5. Step 5: Solve for x
    x = 75,698,141,465.57/363,672.47
  6. Step 6: Final answer
    x = 208,149.22

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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.