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Finding the Fourth Proportional to 259,758.96, 389,660.70 and 91,264.77

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Solution

The fourth proportional to 259,758.96, 389,660.70 and 91,264.77 is: 136,904.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,758.96 : 389,660.70 = 91,264.77 : x
  2. Step 2: Convert to fraction form
    259,758.96/389,660.70 = 91,264.77/x
  3. Step 3: Cross multiply
    259,758.96x = 389,660.70 × 91,264.77
  4. Step 4: Simplify right side
    259,758.96x = 35,562,294,163.54
  5. Step 5: Solve for x
    x = 35,562,294,163.54/259,758.96
  6. Step 6: Final answer
    x = 136,904.98

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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.