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Finding the Third Proportional to 140,320 and 304,400

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Solution

The third proportional to 140,320 and 304,400 is: 660,343.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,320 : 304,400 = 304,400 : x
  2. Step 2: Convert to fraction form
    140,320/304,400 = 304,400/x
  3. Step 3: Cross multiply
    140,320x = 304,400 × 304,400
  4. Step 4: Simplify right side
    140,320x = 92,659,360,000
  5. Step 5: Solve for x
    x = 92,659,360,000/140,320
  6. Step 6: Final answer
    x = 660,343.22

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.