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Finding the Third Proportional to 120,365 and 260,818

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Solution

The third proportional to 120,365 and 260,818 is: 565,164.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,365 : 260,818 = 260,818 : x
  2. Step 2: Convert to fraction form
    120,365/260,818 = 260,818/x
  3. Step 3: Cross multiply
    120,365x = 260,818 × 260,818
  4. Step 4: Simplify right side
    120,365x = 68,026,029,124
  5. Step 5: Solve for x
    x = 68,026,029,124/120,365
  6. Step 6: Final answer
    x = 565,164.53

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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.