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Finding the Third Proportional to 189,122 and 409,764

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Solution

The third proportional to 189,122 and 409,764 is: 887,821.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,122 : 409,764 = 409,764 : x
  2. Step 2: Convert to fraction form
    189,122/409,764 = 409,764/x
  3. Step 3: Cross multiply
    189,122x = 409,764 × 409,764
  4. Step 4: Simplify right side
    189,122x = 167,906,535,696
  5. Step 5: Solve for x
    x = 167,906,535,696/189,122
  6. Step 6: Final answer
    x = 887,821.28

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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.