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Finding the Third Proportional to 179,318 and 422,690

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Solution

The third proportional to 179,318 and 422,690 is: 996,368.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,318 : 422,690 = 422,690 : x
  2. Step 2: Convert to fraction form
    179,318/422,690 = 422,690/x
  3. Step 3: Cross multiply
    179,318x = 422,690 × 422,690
  4. Step 4: Simplify right side
    179,318x = 178,666,836,100
  5. Step 5: Solve for x
    x = 178,666,836,100/179,318
  6. Step 6: Final answer
    x = 996,368.66

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.