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Finding the Fourth Proportional to 322,979.16, 445,249.32 and 227,188.56

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Solution

The fourth proportional to 322,979.16, 445,249.32 and 227,188.56 is: 313,195.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,979.16 : 445,249.32 = 227,188.56 : x
  2. Step 2: Convert to fraction form
    322,979.16/445,249.32 = 227,188.56/x
  3. Step 3: Cross multiply
    322,979.16x = 445,249.32 × 227,188.56
  4. Step 4: Simplify right side
    322,979.16x = 101,155,551,851.78
  5. Step 5: Solve for x
    x = 101,155,551,851.78/322,979.16
  6. Step 6: Final answer
    x = 313,195.29

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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.