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Finding the Fourth Proportional to 327,511.20, 490,100.40 and 227,200.80

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Solution

The fourth proportional to 327,511.20, 490,100.40 and 227,200.80 is: 339,992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,511.20 : 490,100.40 = 227,200.80 : x
  2. Step 2: Convert to fraction form
    327,511.20/490,100.40 = 227,200.80/x
  3. Step 3: Cross multiply
    327,511.20x = 490,100.40 × 227,200.80
  4. Step 4: Simplify right side
    327,511.20x = 111,351,202,960.32
  5. Step 5: Solve for x
    x = 111,351,202,960.32/327,511.20
  6. Step 6: Final answer
    x = 339,992.05

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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.