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Finding the Third Proportional to 204,681 and 315,768

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Solution

The third proportional to 204,681 and 315,768 is: 487,145.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,681 : 315,768 = 315,768 : x
  2. Step 2: Convert to fraction form
    204,681/315,768 = 315,768/x
  3. Step 3: Cross multiply
    204,681x = 315,768 × 315,768
  4. Step 4: Simplify right side
    204,681x = 99,709,429,824
  5. Step 5: Solve for x
    x = 99,709,429,824/204,681
  6. Step 6: Final answer
    x = 487,145.51

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.