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Finding the Third Proportional to 258,720.75 and 556,787.25

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Solution

The third proportional to 258,720.75 and 556,787.25 is: 1,198,249.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,720.75 : 556,787.25 = 556,787.25 : x
  2. Step 2: Convert to fraction form
    258,720.75/556,787.25 = 556,787.25/x
  3. Step 3: Cross multiply
    258,720.75x = 556,787.25 × 556,787.25
  4. Step 4: Simplify right side
    258,720.75x = 310,012,041,762.56
  5. Step 5: Solve for x
    x = 310,012,041,762.56/258,720.75
  6. Step 6: Final answer
    x = 1,198,249.63

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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.