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Finding the Third Proportional to 178,246 and 396,342

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Solution

The third proportional to 178,246 and 396,342 is: 881,293.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,246 : 396,342 = 396,342 : x
  2. Step 2: Convert to fraction form
    178,246/396,342 = 396,342/x
  3. Step 3: Cross multiply
    178,246x = 396,342 × 396,342
  4. Step 4: Simplify right side
    178,246x = 157,086,980,964
  5. Step 5: Solve for x
    x = 157,086,980,964/178,246
  6. Step 6: Final answer
    x = 881,293.16

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.