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Finding the Third Proportional to 204,156 and 306,438

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Solution

The third proportional to 204,156 and 306,438 is: 459,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,156 : 306,438 = 306,438 : x
  2. Step 2: Convert to fraction form
    204,156/306,438 = 306,438/x
  3. Step 3: Cross multiply
    204,156x = 306,438 × 306,438
  4. Step 4: Simplify right side
    204,156x = 93,904,247,844
  5. Step 5: Solve for x
    x = 93,904,247,844/204,156
  6. Step 6: Final answer
    x = 459,963.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.