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Finding the Third Proportional to 216,090 and 327,116

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Solution

The third proportional to 216,090 and 327,116 is: 495,186.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,090 : 327,116 = 327,116 : x
  2. Step 2: Convert to fraction form
    216,090/327,116 = 327,116/x
  3. Step 3: Cross multiply
    216,090x = 327,116 × 327,116
  4. Step 4: Simplify right side
    216,090x = 107,004,877,456
  5. Step 5: Solve for x
    x = 107,004,877,456/216,090
  6. Step 6: Final answer
    x = 495,186.62

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.