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Finding the Fourth Proportional to 275,209.70, 379,793.46 and 160,485.15

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Solution

The fourth proportional to 275,209.70, 379,793.46 and 160,485.15 is: 221,471.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,209.70 : 379,793.46 = 160,485.15 : x
  2. Step 2: Convert to fraction form
    275,209.70/379,793.46 = 160,485.15/x
  3. Step 3: Cross multiply
    275,209.70x = 379,793.46 × 160,485.15
  4. Step 4: Simplify right side
    275,209.70x = 60,951,209,384.10
  5. Step 5: Solve for x
    x = 60,951,209,384.10/275,209.70
  6. Step 6: Final answer
    x = 221,471.88

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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.