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Finding the Fourth Proportional to 275,221.80, 379,809.90 and 166,311.18

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Solution

The fourth proportional to 275,221.80, 379,809.90 and 166,311.18 is: 229,511.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,221.80 : 379,809.90 = 166,311.18 : x
  2. Step 2: Convert to fraction form
    275,221.80/379,809.90 = 166,311.18/x
  3. Step 3: Cross multiply
    275,221.80x = 379,809.90 × 166,311.18
  4. Step 4: Simplify right side
    275,221.80x = 63,166,632,644.68
  5. Step 5: Solve for x
    x = 63,166,632,644.68/275,221.80
  6. Step 6: Final answer
    x = 229,511.73

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1.5x scale

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.