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Finding the Third Proportional to 100,712 and 213,388

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Solution

The third proportional to 100,712 and 213,388 is: 452,125.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,712 : 213,388 = 213,388 : x
  2. Step 2: Convert to fraction form
    100,712/213,388 = 213,388/x
  3. Step 3: Cross multiply
    100,712x = 213,388 × 213,388
  4. Step 4: Simplify right side
    100,712x = 45,534,438,544
  5. Step 5: Solve for x
    x = 45,534,438,544/100,712
  6. Step 6: Final answer
    x = 452,125.25

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.