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Finding the Third Proportional to 86,922 and 209,328

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Solution

The third proportional to 86,922 and 209,328 is: 504,109.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,922 : 209,328 = 209,328 : x
  2. Step 2: Convert to fraction form
    86,922/209,328 = 209,328/x
  3. Step 3: Cross multiply
    86,922x = 209,328 × 209,328
  4. Step 4: Simplify right side
    86,922x = 43,818,211,584
  5. Step 5: Solve for x
    x = 43,818,211,584/86,922
  6. Step 6: Final answer
    x = 504,109.56

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Why These Related Problems?

These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.