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Finding the Third Proportional to 123,212 and 263,918

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Solution

The third proportional to 123,212 and 263,918 is: 565,307.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,212 : 263,918 = 263,918 : x
  2. Step 2: Convert to fraction form
    123,212/263,918 = 263,918/x
  3. Step 3: Cross multiply
    123,212x = 263,918 × 263,918
  4. Step 4: Simplify right side
    123,212x = 69,652,710,724
  5. Step 5: Solve for x
    x = 69,652,710,724/123,212
  6. Step 6: Final answer
    x = 565,307.85

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.