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Finding the Third Proportional to 120,110 and 278,022

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Solution

The third proportional to 120,110 and 278,022 is: 643,545.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,110 : 278,022 = 278,022 : x
  2. Step 2: Convert to fraction form
    120,110/278,022 = 278,022/x
  3. Step 3: Cross multiply
    120,110x = 278,022 × 278,022
  4. Step 4: Simplify right side
    120,110x = 77,296,232,484
  5. Step 5: Solve for x
    x = 77,296,232,484/120,110
  6. Step 6: Final answer
    x = 643,545.35

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.