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Finding the Third Proportional to 200,824 and 310,958

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Solution

The third proportional to 200,824 and 310,958 is: 481,490.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,824 : 310,958 = 310,958 : x
  2. Step 2: Convert to fraction form
    200,824/310,958 = 310,958/x
  3. Step 3: Cross multiply
    200,824x = 310,958 × 310,958
  4. Step 4: Simplify right side
    200,824x = 96,694,877,764
  5. Step 5: Solve for x
    x = 96,694,877,764/200,824
  6. Step 6: Final answer
    x = 481,490.65

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.