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Finding the Third Proportional to 100,402 and 218,299

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Solution

The third proportional to 100,402 and 218,299 is: 474,636.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,402 : 218,299 = 218,299 : x
  2. Step 2: Convert to fraction form
    100,402/218,299 = 218,299/x
  3. Step 3: Cross multiply
    100,402x = 218,299 × 218,299
  4. Step 4: Simplify right side
    100,402x = 47,654,453,401
  5. Step 5: Solve for x
    x = 47,654,453,401/100,402
  6. Step 6: Final answer
    x = 474,636.50

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.