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Finding the Fourth Proportional to 322,979.34, 445,249.54 and 227,188.74

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Solution

The fourth proportional to 322,979.34, 445,249.54 and 227,188.74 is: 313,195.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,979.34 : 445,249.54 = 227,188.74 : x
  2. Step 2: Convert to fraction form
    322,979.34/445,249.54 = 227,188.74/x
  3. Step 3: Cross multiply
    322,979.34x = 445,249.54 × 227,188.74
  4. Step 4: Simplify right side
    322,979.34x = 101,155,681,978.18
  5. Step 5: Solve for x
    x = 101,155,681,978.18/322,979.34
  6. Step 6: Final answer
    x = 313,195.52

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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.