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Finding the Third Proportional to 204,490 and 313,878

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Solution

The third proportional to 204,490 and 313,878 is: 481,781.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,490 : 313,878 = 313,878 : x
  2. Step 2: Convert to fraction form
    204,490/313,878 = 313,878/x
  3. Step 3: Cross multiply
    204,490x = 313,878 × 313,878
  4. Step 4: Simplify right side
    204,490x = 98,519,398,884
  5. Step 5: Solve for x
    x = 98,519,398,884/204,490
  6. Step 6: Final answer
    x = 481,781.01

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.