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Finding the Third Proportional to 162,640 and 253,796

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Solution

The third proportional to 162,640 and 253,796 is: 396,042.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,640 : 253,796 = 253,796 : x
  2. Step 2: Convert to fraction form
    162,640/253,796 = 253,796/x
  3. Step 3: Cross multiply
    162,640x = 253,796 × 253,796
  4. Step 4: Simplify right side
    162,640x = 64,412,409,616
  5. Step 5: Solve for x
    x = 64,412,409,616/162,640
  6. Step 6: Final answer
    x = 396,042.85

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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.