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Finding the Third Proportional to 216,435 and 469,836

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Solution

The third proportional to 216,435 and 469,836 is: 1,019,917.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,435 : 469,836 = 469,836 : x
  2. Step 2: Convert to fraction form
    216,435/469,836 = 469,836/x
  3. Step 3: Cross multiply
    216,435x = 469,836 × 469,836
  4. Step 4: Simplify right side
    216,435x = 220,745,866,896
  5. Step 5: Solve for x
    x = 220,745,866,896/216,435
  6. Step 6: Final answer
    x = 1,019,917.61

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.