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Finding the Third Proportional to 299,964.75 and 421,880.25

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Solution

The third proportional to 299,964.75 and 421,880.25 is: 593,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,964.75 : 421,880.25 = 421,880.25 : x
  2. Step 2: Convert to fraction form
    299,964.75/421,880.25 = 421,880.25/x
  3. Step 3: Cross multiply
    299,964.75x = 421,880.25 × 421,880.25
  4. Step 4: Simplify right side
    299,964.75x = 177,982,945,340.06
  5. Step 5: Solve for x
    x = 177,982,945,340.06/299,964.75
  6. Step 6: Final answer
    x = 593,346.20

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.