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Finding the Third Proportional to 100,284 and 213,564

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Solution

The third proportional to 100,284 and 213,564 is: 454,804.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,284 : 213,564 = 213,564 : x
  2. Step 2: Convert to fraction form
    100,284/213,564 = 213,564/x
  3. Step 3: Cross multiply
    100,284x = 213,564 × 213,564
  4. Step 4: Simplify right side
    100,284x = 45,609,582,096
  5. Step 5: Solve for x
    x = 45,609,582,096/100,284
  6. Step 6: Final answer
    x = 454,804.18

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.