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Finding the Third Proportional to 339,192 and 498,420

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Solution

The third proportional to 339,192 and 498,420 is: 732,394.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,192 : 498,420 = 498,420 : x
  2. Step 2: Convert to fraction form
    339,192/498,420 = 498,420/x
  3. Step 3: Cross multiply
    339,192x = 498,420 × 498,420
  4. Step 4: Simplify right side
    339,192x = 248,422,496,400
  5. Step 5: Solve for x
    x = 248,422,496,400/339,192
  6. Step 6: Final answer
    x = 732,394.92

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.