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Finding the Third Proportional to 120,816 and 259,127

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Solution

The third proportional to 120,816 and 259,127 is: 555,777.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,816 : 259,127 = 259,127 : x
  2. Step 2: Convert to fraction form
    120,816/259,127 = 259,127/x
  3. Step 3: Cross multiply
    120,816x = 259,127 × 259,127
  4. Step 4: Simplify right side
    120,816x = 67,146,802,129
  5. Step 5: Solve for x
    x = 67,146,802,129/120,816
  6. Step 6: Final answer
    x = 555,777.40

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.