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Finding the Third Proportional to 216,582 and 324,874

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Solution

The third proportional to 216,582 and 324,874 is: 487,312.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,582 : 324,874 = 324,874 : x
  2. Step 2: Convert to fraction form
    216,582/324,874 = 324,874/x
  3. Step 3: Cross multiply
    216,582x = 324,874 × 324,874
  4. Step 4: Simplify right side
    216,582x = 105,543,115,876
  5. Step 5: Solve for x
    x = 105,543,115,876/216,582
  6. Step 6: Final answer
    x = 487,312.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.