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Finding the Fourth Proportional to 266,708.79, 400,375.74 and 210,586.73

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Solution

The fourth proportional to 266,708.79, 400,375.74 and 210,586.73 is: 316,126.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,708.79 : 400,375.74 = 210,586.73 : x
  2. Step 2: Convert to fraction form
    266,708.79/400,375.74 = 210,586.73/x
  3. Step 3: Cross multiply
    266,708.79x = 400,375.74 × 210,586.73
  4. Step 4: Simplify right side
    266,708.79x = 84,313,815,856.05
  5. Step 5: Solve for x
    x = 84,313,815,856.05/266,708.79
  6. Step 6: Final answer
    x = 316,126.87

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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.