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Finding the Fourth Proportional to 272,255.60, 408,820.80 and 205,770.80

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Solution

The fourth proportional to 272,255.60, 408,820.80 and 205,770.80 is: 308,986.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,255.60 : 408,820.80 = 205,770.80 : x
  2. Step 2: Convert to fraction form
    272,255.60/408,820.80 = 205,770.80/x
  3. Step 3: Cross multiply
    272,255.60x = 408,820.80 × 205,770.80
  4. Step 4: Simplify right side
    272,255.60x = 84,123,383,072.64
  5. Step 5: Solve for x
    x = 84,123,383,072.64/272,255.60
  6. Step 6: Final answer
    x = 308,986.79

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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.