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Finding the Third Proportional to 190,722 and 418,788

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Solution

The third proportional to 190,722 and 418,788 is: 919,576.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,722 : 418,788 = 418,788 : x
  2. Step 2: Convert to fraction form
    190,722/418,788 = 418,788/x
  3. Step 3: Cross multiply
    190,722x = 418,788 × 418,788
  4. Step 4: Simplify right side
    190,722x = 175,383,388,944
  5. Step 5: Solve for x
    x = 175,383,388,944/190,722
  6. Step 6: Final answer
    x = 919,576.08

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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.