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Finding the Third Proportional to 291,327.75 and 393,609.38

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Solution

The third proportional to 291,327.75 and 393,609.38 is: 531,800.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,327.75 : 393,609.38 = 393,609.38 : x
  2. Step 2: Convert to fraction form
    291,327.75/393,609.38 = 393,609.38/x
  3. Step 3: Cross multiply
    291,327.75x = 393,609.38 × 393,609.38
  4. Step 4: Simplify right side
    291,327.75x = 154,928,340,087.89
  5. Step 5: Solve for x
    x = 154,928,340,087.89/291,327.75
  6. Step 6: Final answer
    x = 531,800.83

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.