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Finding the Fourth Proportional to 327,091.80, 490,273.20 and 127,345.80

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Solution

The fourth proportional to 327,091.80, 490,273.20 and 127,345.80 is: 190,876.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    327,091.80 : 490,273.20 = 127,345.80 : x
  2. Step 2: Convert to fraction form
    327,091.80/490,273.20 = 127,345.80/x
  3. Step 3: Cross multiply
    327,091.80x = 490,273.20 × 127,345.80
  4. Step 4: Simplify right side
    327,091.80x = 62,434,232,872.56
  5. Step 5: Solve for x
    x = 62,434,232,872.56/327,091.80
  6. Step 6: Final answer
    x = 190,876.79

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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.