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Finding the Third Proportional to 100,828 and 212,048

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Solution

The third proportional to 100,828 and 212,048 is: 445,951.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,828 : 212,048 = 212,048 : x
  2. Step 2: Convert to fraction form
    100,828/212,048 = 212,048/x
  3. Step 3: Cross multiply
    100,828x = 212,048 × 212,048
  4. Step 4: Simplify right side
    100,828x = 44,964,354,304
  5. Step 5: Solve for x
    x = 44,964,354,304/100,828
  6. Step 6: Final answer
    x = 445,951.07

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Why These Related Problems?

These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.