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Finding the Third Proportional to 171,145.50 and 381,643.75

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Solution

The third proportional to 171,145.50 and 381,643.75 is: 851,041.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,145.50 : 381,643.75 = 381,643.75 : x
  2. Step 2: Convert to fraction form
    171,145.50/381,643.75 = 381,643.75/x
  3. Step 3: Cross multiply
    171,145.50x = 381,643.75 × 381,643.75
  4. Step 4: Simplify right side
    171,145.50x = 145,651,951,914.06
  5. Step 5: Solve for x
    x = 145,651,951,914.06/171,145.50
  6. Step 6: Final answer
    x = 851,041.67

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Why These Related Problems?

These problems maintain the same ratio (2.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.