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Finding the Third Proportional to 100,318 and 218,132

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Solution

The third proportional to 100,318 and 218,132 is: 474,307.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,318 : 218,132 = 218,132 : x
  2. Step 2: Convert to fraction form
    100,318/218,132 = 218,132/x
  3. Step 3: Cross multiply
    100,318x = 218,132 × 218,132
  4. Step 4: Simplify right side
    100,318x = 47,581,569,424
  5. Step 5: Solve for x
    x = 47,581,569,424/100,318
  6. Step 6: Final answer
    x = 474,307.40

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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.