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Finding the Third Proportional to 175,644 and 386,280

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Solution

The third proportional to 175,644 and 386,280 is: 849,515.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    175,644 : 386,280 = 386,280 : x
  2. Step 2: Convert to fraction form
    175,644/386,280 = 386,280/x
  3. Step 3: Cross multiply
    175,644x = 386,280 × 386,280
  4. Step 4: Simplify right side
    175,644x = 149,212,238,400
  5. Step 5: Solve for x
    x = 149,212,238,400/175,644
  6. Step 6: Final answer
    x = 849,515.15

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.