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Finding the Third Proportional to 218,885 and 479,288.25

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Solution

The third proportional to 218,885 and 479,288.25 is: 1,049,488.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,885 : 479,288.25 = 479,288.25 : x
  2. Step 2: Convert to fraction form
    218,885/479,288.25 = 479,288.25/x
  3. Step 3: Cross multiply
    218,885x = 479,288.25 × 479,288.25
  4. Step 4: Simplify right side
    218,885x = 229,717,226,588.06
  5. Step 5: Solve for x
    x = 229,717,226,588.06/218,885
  6. Step 6: Final answer
    x = 1,049,488.21

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.