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Finding the Third Proportional to 200,916 and 445,888

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Solution

The third proportional to 200,916 and 445,888 is: 989,548.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,916 : 445,888 = 445,888 : x
  2. Step 2: Convert to fraction form
    200,916/445,888 = 445,888/x
  3. Step 3: Cross multiply
    200,916x = 445,888 × 445,888
  4. Step 4: Simplify right side
    200,916x = 198,816,108,544
  5. Step 5: Solve for x
    x = 198,816,108,544/200,916
  6. Step 6: Final answer
    x = 989,548.41

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.