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Finding the Third Proportional to 348,438.50 and 490,694.25

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Solution

The third proportional to 348,438.50 and 490,694.25 is: 691,028.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,438.50 : 490,694.25 = 490,694.25 : x
  2. Step 2: Convert to fraction form
    348,438.50/490,694.25 = 490,694.25/x
  3. Step 3: Cross multiply
    348,438.50x = 490,694.25 × 490,694.25
  4. Step 4: Simplify right side
    348,438.50x = 240,780,846,983.06
  5. Step 5: Solve for x
    x = 240,780,846,983.06/348,438.50
  6. Step 6: Final answer
    x = 691,028.25

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.