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Finding the Fourth Proportional to 275,280.88, 379,815.06 and 158,965.84

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Solution

The fourth proportional to 275,280.88, 379,815.06 and 158,965.84 is: 219,330.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,280.88 : 379,815.06 = 158,965.84 : x
  2. Step 2: Convert to fraction form
    275,280.88/379,815.06 = 158,965.84/x
  3. Step 3: Cross multiply
    275,280.88x = 379,815.06 × 158,965.84
  4. Step 4: Simplify right side
    275,280.88x = 60,377,620,057.55
  5. Step 5: Solve for x
    x = 60,377,620,057.55/275,280.88
  6. Step 6: Final answer
    x = 219,330.96

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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.