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Finding the Third Proportional to 164,314 and 336,400

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Solution

The third proportional to 164,314 and 336,400 is: 688,711.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,314 : 336,400 = 336,400 : x
  2. Step 2: Convert to fraction form
    164,314/336,400 = 336,400/x
  3. Step 3: Cross multiply
    164,314x = 336,400 × 336,400
  4. Step 4: Simplify right side
    164,314x = 113,164,960,000
  5. Step 5: Solve for x
    x = 113,164,960,000/164,314
  6. Step 6: Final answer
    x = 688,711.61

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.