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Finding the Fourth Proportional to 327,331.80, 490,997.70 and 276,010.20

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Solution

The fourth proportional to 327,331.80, 490,997.70 and 276,010.20 is: 414,015.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,331.80 : 490,997.70 = 276,010.20 : x
  2. Step 2: Convert to fraction form
    327,331.80/490,997.70 = 276,010.20/x
  3. Step 3: Cross multiply
    327,331.80x = 490,997.70 × 276,010.20
  4. Step 4: Simplify right side
    327,331.80x = 135,520,373,376.54
  5. Step 5: Solve for x
    x = 135,520,373,376.54/327,331.80
  6. Step 6: Final answer
    x = 414,015.30

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1.5x scale

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.