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Finding the Third Proportional to 381,697.50 and 518,387.50

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Solution

The third proportional to 381,697.50 and 518,387.50 is: 704,027.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,697.50 : 518,387.50 = 518,387.50 : x
  2. Step 2: Convert to fraction form
    381,697.50/518,387.50 = 518,387.50/x
  3. Step 3: Cross multiply
    381,697.50x = 518,387.50 × 518,387.50
  4. Step 4: Simplify right side
    381,697.50x = 268,725,600,156.25
  5. Step 5: Solve for x
    x = 268,725,600,156.25/381,697.50
  6. Step 6: Final answer
    x = 704,027.67

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.