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Finding the Fourth Proportional to 218,948.60, 328,034.10 and 204,951.80

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Solution

The fourth proportional to 218,948.60, 328,034.10 and 204,951.80 is: 307,063.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,948.60 : 328,034.10 = 204,951.80 : x
  2. Step 2: Convert to fraction form
    218,948.60/328,034.10 = 204,951.80/x
  3. Step 3: Cross multiply
    218,948.60x = 328,034.10 × 204,951.80
  4. Step 4: Simplify right side
    218,948.60x = 67,231,179,256.38
  5. Step 5: Solve for x
    x = 67,231,179,256.38/218,948.60
  6. Step 6: Final answer
    x = 307,063.75

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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.