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Finding the Third Proportional to 100,903 and 212,262

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Solution

The third proportional to 100,903 and 212,262 is: 446,519.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,903 : 212,262 = 212,262 : x
  2. Step 2: Convert to fraction form
    100,903/212,262 = 212,262/x
  3. Step 3: Cross multiply
    100,903x = 212,262 × 212,262
  4. Step 4: Simplify right side
    100,903x = 45,055,156,644
  5. Step 5: Solve for x
    x = 45,055,156,644/100,903
  6. Step 6: Final answer
    x = 446,519.50

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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.