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Finding the Fourth Proportional to 225,821.70, 338,732.55 and 172,677.60

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Solution

The fourth proportional to 225,821.70, 338,732.55 and 172,677.60 is: 259,016.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,821.70 : 338,732.55 = 172,677.60 : x
  2. Step 2: Convert to fraction form
    225,821.70/338,732.55 = 172,677.60/x
  3. Step 3: Cross multiply
    225,821.70x = 338,732.55 × 172,677.60
  4. Step 4: Simplify right side
    225,821.70x = 58,491,523,775.88
  5. Step 5: Solve for x
    x = 58,491,523,775.88/225,821.70
  6. Step 6: Final answer
    x = 259,016.40

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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.