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Finding the Third Proportional to 339,204 and 498,438

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Solution

The third proportional to 339,204 and 498,438 is: 732,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,204 : 498,438 = 498,438 : x
  2. Step 2: Convert to fraction form
    339,204/498,438 = 498,438/x
  3. Step 3: Cross multiply
    339,204x = 498,438 × 498,438
  4. Step 4: Simplify right side
    339,204x = 248,440,439,844
  5. Step 5: Solve for x
    x = 248,440,439,844/339,204
  6. Step 6: Final answer
    x = 732,421.90

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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.