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Finding the Third Proportional to 276,615 and 378,564.75

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Solution

The third proportional to 276,615 and 378,564.75 is: 518,089.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,615 : 378,564.75 = 378,564.75 : x
  2. Step 2: Convert to fraction form
    276,615/378,564.75 = 378,564.75/x
  3. Step 3: Cross multiply
    276,615x = 378,564.75 × 378,564.75
  4. Step 4: Simplify right side
    276,615x = 143,311,269,942.56
  5. Step 5: Solve for x
    x = 143,311,269,942.56/276,615
  6. Step 6: Final answer
    x = 518,089.29

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.