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Finding the Third Proportional to 272,488 and 425,288

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Solution

The third proportional to 272,488 and 425,288 is: 663,771.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,488 : 425,288 = 425,288 : x
  2. Step 2: Convert to fraction form
    272,488/425,288 = 425,288/x
  3. Step 3: Cross multiply
    272,488x = 425,288 × 425,288
  4. Step 4: Simplify right side
    272,488x = 180,869,882,944
  5. Step 5: Solve for x
    x = 180,869,882,944/272,488
  6. Step 6: Final answer
    x = 663,771.92

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.