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Finding the Third Proportional to 138,650 and 298,316

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Solution

The third proportional to 138,650 and 298,316 is: 641,849.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,650 : 298,316 = 298,316 : x
  2. Step 2: Convert to fraction form
    138,650/298,316 = 298,316/x
  3. Step 3: Cross multiply
    138,650x = 298,316 × 298,316
  4. Step 4: Simplify right side
    138,650x = 88,992,435,856
  5. Step 5: Solve for x
    x = 88,992,435,856/138,650
  6. Step 6: Final answer
    x = 641,849.52

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.