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Finding the Third Proportional to 161,688 and 349,188

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Solution

The third proportional to 161,688 and 349,188 is: 754,120.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,688 : 349,188 = 349,188 : x
  2. Step 2: Convert to fraction form
    161,688/349,188 = 349,188/x
  3. Step 3: Cross multiply
    161,688x = 349,188 × 349,188
  4. Step 4: Simplify right side
    161,688x = 121,932,259,344
  5. Step 5: Solve for x
    x = 121,932,259,344/161,688
  6. Step 6: Final answer
    x = 754,120.65

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.