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Finding the Fourth Proportional to 275,517.12, 380,115.84 and 180,078.90

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Solution

The fourth proportional to 275,517.12, 380,115.84 and 180,078.90 is: 248,444.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,517.12 : 380,115.84 = 180,078.90 : x
  2. Step 2: Convert to fraction form
    275,517.12/380,115.84 = 180,078.90/x
  3. Step 3: Cross multiply
    275,517.12x = 380,115.84 × 180,078.90
  4. Step 4: Simplify right side
    275,517.12x = 68,450,842,339.78
  5. Step 5: Solve for x
    x = 68,450,842,339.78/275,517.12
  6. Step 6: Final answer
    x = 248,444.97

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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.