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Finding the Third Proportional to 120,345.75 and 258,795

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Solution

The third proportional to 120,345.75 and 258,795 is: 556,520.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,345.75 : 258,795 = 258,795 : x
  2. Step 2: Convert to fraction form
    120,345.75/258,795 = 258,795/x
  3. Step 3: Cross multiply
    120,345.75x = 258,795 × 258,795
  4. Step 4: Simplify right side
    120,345.75x = 66,974,852,025
  5. Step 5: Solve for x
    x = 66,974,852,025/120,345.75
  6. Step 6: Final answer
    x = 556,520.29

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.