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Finding the Fourth Proportional to 275,311.92, 379,930.59 and 160,669.38

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Solution

The fourth proportional to 275,311.92, 379,930.59 and 160,669.38 is: 221,723.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,311.92 : 379,930.59 = 160,669.38 : x
  2. Step 2: Convert to fraction form
    275,311.92/379,930.59 = 160,669.38/x
  3. Step 3: Cross multiply
    275,311.92x = 379,930.59 × 160,669.38
  4. Step 4: Simplify right side
    275,311.92x = 61,043,212,338.33
  5. Step 5: Solve for x
    x = 61,043,212,338.33/275,311.92
  6. Step 6: Final answer
    x = 221,723.83

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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.