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Finding the Third Proportional to 103,621 and 204,816

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Solution

The third proportional to 103,621 and 204,816 is: 404,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,621 : 204,816 = 204,816 : x
  2. Step 2: Convert to fraction form
    103,621/204,816 = 204,816/x
  3. Step 3: Cross multiply
    103,621x = 204,816 × 204,816
  4. Step 4: Simplify right side
    103,621x = 41,949,593,856
  5. Step 5: Solve for x
    x = 41,949,593,856/103,621
  6. Step 6: Final answer
    x = 404,836.80

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Why These Related Problems?

These problems maintain the same ratio (1.98) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.