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Finding the Fourth Proportional to 216,687.96, 324,818.71 and 126,616.37

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Solution

The fourth proportional to 216,687.96, 324,818.71 and 126,616.37 is: 189,799.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,687.96 : 324,818.71 = 126,616.37 : x
  2. Step 2: Convert to fraction form
    216,687.96/324,818.71 = 126,616.37/x
  3. Step 3: Cross multiply
    216,687.96x = 324,818.71 × 126,616.37
  4. Step 4: Simplify right side
    216,687.96x = 41,127,364,027.65
  5. Step 5: Solve for x
    x = 41,127,364,027.65/216,687.96
  6. Step 6: Final answer
    x = 189,799.95

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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.