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Finding the Fourth Proportional to 259,313.75, 388,748.75 and 99,504.37

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Solution

The fourth proportional to 259,313.75, 388,748.75 and 99,504.37 is: 149,171.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,313.75 : 388,748.75 = 99,504.37 : x
  2. Step 2: Convert to fraction form
    259,313.75/388,748.75 = 99,504.37/x
  3. Step 3: Cross multiply
    259,313.75x = 388,748.75 × 99,504.37
  4. Step 4: Simplify right side
    259,313.75x = 38,682,198,733.93
  5. Step 5: Solve for x
    x = 38,682,198,733.93/259,313.75
  6. Step 6: Final answer
    x = 149,171.42

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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.