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Finding the Third Proportional to 186,858 and 279,615

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Solution

The third proportional to 186,858 and 279,615 is: 418,416.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,858 : 279,615 = 279,615 : x
  2. Step 2: Convert to fraction form
    186,858/279,615 = 279,615/x
  3. Step 3: Cross multiply
    186,858x = 279,615 × 279,615
  4. Step 4: Simplify right side
    186,858x = 78,184,548,225
  5. Step 5: Solve for x
    x = 78,184,548,225/186,858
  6. Step 6: Final answer
    x = 418,416.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.