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Finding the Fourth Proportional to 325,938.60, 488,251.80 and 226,211.40

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Solution

The fourth proportional to 325,938.60, 488,251.80 and 226,211.40 is: 338,861.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,938.60 : 488,251.80 = 226,211.40 : x
  2. Step 2: Convert to fraction form
    325,938.60/488,251.80 = 226,211.40/x
  3. Step 3: Cross multiply
    325,938.60x = 488,251.80 × 226,211.40
  4. Step 4: Simplify right side
    325,938.60x = 110,448,123,230.52
  5. Step 5: Solve for x
    x = 110,448,123,230.52/325,938.60
  6. Step 6: Final answer
    x = 338,861.75

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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.