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Finding the Third Proportional to 168,840 and 356,688

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Solution

The third proportional to 168,840 and 356,688 is: 753,531.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,840 : 356,688 = 356,688 : x
  2. Step 2: Convert to fraction form
    168,840/356,688 = 356,688/x
  3. Step 3: Cross multiply
    168,840x = 356,688 × 356,688
  4. Step 4: Simplify right side
    168,840x = 127,226,329,344
  5. Step 5: Solve for x
    x = 127,226,329,344/168,840
  6. Step 6: Final answer
    x = 753,531.92

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.