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Finding the Third Proportional to 208,518 and 458,508

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Solution

The third proportional to 208,518 and 458,508 is: 1,008,208.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,518 : 458,508 = 458,508 : x
  2. Step 2: Convert to fraction form
    208,518/458,508 = 458,508/x
  3. Step 3: Cross multiply
    208,518x = 458,508 × 458,508
  4. Step 4: Simplify right side
    208,518x = 210,229,586,064
  5. Step 5: Solve for x
    x = 210,229,586,064/208,518
  6. Step 6: Final answer
    x = 1,008,208.34

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.