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Finding the Third Proportional to 90,900 and 212,304

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Solution

The third proportional to 90,900 and 212,304 is: 495,852.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,900 : 212,304 = 212,304 : x
  2. Step 2: Convert to fraction form
    90,900/212,304 = 212,304/x
  3. Step 3: Cross multiply
    90,900x = 212,304 × 212,304
  4. Step 4: Simplify right side
    90,900x = 45,072,988,416
  5. Step 5: Solve for x
    x = 45,072,988,416/90,900
  6. Step 6: Final answer
    x = 495,852.46

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.