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Finding the Fourth Proportional to 199,905.65, 275,691.15 and 165,860.21

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Solution

The fourth proportional to 199,905.65, 275,691.15 and 165,860.21 is: 228,738.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,905.65 : 275,691.15 = 165,860.21 : x
  2. Step 2: Convert to fraction form
    199,905.65/275,691.15 = 165,860.21/x
  3. Step 3: Cross multiply
    199,905.65x = 275,691.15 × 165,860.21
  4. Step 4: Simplify right side
    199,905.65x = 45,726,192,034.14
  5. Step 5: Solve for x
    x = 45,726,192,034.14/199,905.65
  6. Step 6: Final answer
    x = 228,738.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.