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Finding the Fourth Proportional to 321,480.11, 482,121.72 and 222,277.79

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Solution

The fourth proportional to 321,480.11, 482,121.72 and 222,277.79 is: 333,348.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,480.11 : 482,121.72 = 222,277.79 : x
  2. Step 2: Convert to fraction form
    321,480.11/482,121.72 = 222,277.79/x
  3. Step 3: Cross multiply
    321,480.11x = 482,121.72 × 222,277.79
  4. Step 4: Simplify right side
    321,480.11x = 107,164,951,637.90
  5. Step 5: Solve for x
    x = 107,164,951,637.90/321,480.11
  6. Step 6: Final answer
    x = 333,348.62

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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.