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Finding the Third Proportional to 100,470 and 218,418

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Solution

The third proportional to 100,470 and 218,418 is: 474,832.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,470 : 218,418 = 218,418 : x
  2. Step 2: Convert to fraction form
    100,470/218,418 = 218,418/x
  3. Step 3: Cross multiply
    100,470x = 218,418 × 218,418
  4. Step 4: Simplify right side
    100,470x = 47,706,422,724
  5. Step 5: Solve for x
    x = 47,706,422,724/100,470
  6. Step 6: Final answer
    x = 474,832.51

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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.