Home / 258,770.22-388,191.77-90,265.97

Finding the Fourth Proportional to 258,770.22, 388,191.77 and 90,265.97

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Solution

The fourth proportional to 258,770.22, 388,191.77 and 90,265.97 is: 135,411.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,770.22 : 388,191.77 = 90,265.97 : x
  2. Step 2: Convert to fraction form
    258,770.22/388,191.77 = 90,265.97/x
  3. Step 3: Cross multiply
    258,770.22x = 388,191.77 × 90,265.97
  4. Step 4: Simplify right side
    258,770.22x = 35,040,505,846.88
  5. Step 5: Solve for x
    x = 35,040,505,846.88/258,770.22
  6. Step 6: Final answer
    x = 135,411.67

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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.