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Finding the Fourth Proportional to 275,375.97, 380,015.28 and 154,519.65

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Solution

The fourth proportional to 275,375.97, 380,015.28 and 154,519.65 is: 213,235.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,375.97 : 380,015.28 = 154,519.65 : x
  2. Step 2: Convert to fraction form
    275,375.97/380,015.28 = 154,519.65/x
  3. Step 3: Cross multiply
    275,375.97x = 380,015.28 × 154,519.65
  4. Step 4: Simplify right side
    275,375.97x = 58,719,828,060.25
  5. Step 5: Solve for x
    x = 58,719,828,060.25/275,375.97
  6. Step 6: Final answer
    x = 213,235.12

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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.