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Finding the Third Proportional to 177,820 and 419,742

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Solution

The third proportional to 177,820 and 419,742 is: 990,796.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    177,820 : 419,742 = 419,742 : x
  2. Step 2: Convert to fraction form
    177,820/419,742 = 419,742/x
  3. Step 3: Cross multiply
    177,820x = 419,742 × 419,742
  4. Step 4: Simplify right side
    177,820x = 176,183,346,564
  5. Step 5: Solve for x
    x = 176,183,346,564/177,820
  6. Step 6: Final answer
    x = 990,796.01

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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.