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Finding the Fourth Proportional to 275,288.70, 412,933.05 and 88,319.10

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Solution

The fourth proportional to 275,288.70, 412,933.05 and 88,319.10 is: 132,478.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,288.70 : 412,933.05 = 88,319.10 : x
  2. Step 2: Convert to fraction form
    275,288.70/412,933.05 = 88,319.10/x
  3. Step 3: Cross multiply
    275,288.70x = 412,933.05 × 88,319.10
  4. Step 4: Simplify right side
    275,288.70x = 36,469,875,336.26
  5. Step 5: Solve for x
    x = 36,469,875,336.26/275,288.70
  6. Step 6: Final answer
    x = 132,478.65

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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.