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Finding the Third Proportional to 159,280 and 248,600

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Solution

The third proportional to 159,280 and 248,600 is: 388,008.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,280 : 248,600 = 248,600 : x
  2. Step 2: Convert to fraction form
    159,280/248,600 = 248,600/x
  3. Step 3: Cross multiply
    159,280x = 248,600 × 248,600
  4. Step 4: Simplify right side
    159,280x = 61,801,960,000
  5. Step 5: Solve for x
    x = 61,801,960,000/159,280
  6. Step 6: Final answer
    x = 388,008.29

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.