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Finding the Third Proportional to 166,981.50 and 255,987

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Solution

The third proportional to 166,981.50 and 255,987 is: 392,434.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,981.50 : 255,987 = 255,987 : x
  2. Step 2: Convert to fraction form
    166,981.50/255,987 = 255,987/x
  3. Step 3: Cross multiply
    166,981.50x = 255,987 × 255,987
  4. Step 4: Simplify right side
    166,981.50x = 65,529,344,169
  5. Step 5: Solve for x
    x = 65,529,344,169/166,981.50
  6. Step 6: Final answer
    x = 392,434.76

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.