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Finding the Third Proportional to 100,778 and 219,976

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Solution

The third proportional to 100,778 and 219,976 is: 480,158.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,778 : 219,976 = 219,976 : x
  2. Step 2: Convert to fraction form
    100,778/219,976 = 219,976/x
  3. Step 3: Cross multiply
    100,778x = 219,976 × 219,976
  4. Step 4: Simplify right side
    100,778x = 48,389,440,576
  5. Step 5: Solve for x
    x = 48,389,440,576/100,778
  6. Step 6: Final answer
    x = 480,158.77

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.