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Finding the Third Proportional to 200,651 and 417,909

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Solution

The third proportional to 200,651 and 417,909 is: 870,406.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,651 : 417,909 = 417,909 : x
  2. Step 2: Convert to fraction form
    200,651/417,909 = 417,909/x
  3. Step 3: Cross multiply
    200,651x = 417,909 × 417,909
  4. Step 4: Simplify right side
    200,651x = 174,647,932,281
  5. Step 5: Solve for x
    x = 174,647,932,281/200,651
  6. Step 6: Final answer
    x = 870,406.49

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.