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Finding the Third Proportional to 218,666 and 480,384

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Solution

The third proportional to 218,666 and 480,384 is: 1,055,348.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,666 : 480,384 = 480,384 : x
  2. Step 2: Convert to fraction form
    218,666/480,384 = 480,384/x
  3. Step 3: Cross multiply
    218,666x = 480,384 × 480,384
  4. Step 4: Simplify right side
    218,666x = 230,768,787,456
  5. Step 5: Solve for x
    x = 230,768,787,456/218,666
  6. Step 6: Final answer
    x = 1,055,348.28

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.