Home / 220,655.22-331,032-80,413.85

Finding the Fourth Proportional to 220,655.22, 331,032 and 80,413.85

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Solution

The fourth proportional to 220,655.22, 331,032 and 80,413.85 is: 120,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,655.22 : 331,032 = 80,413.85 : x
  2. Step 2: Convert to fraction form
    220,655.22/331,032 = 80,413.85/x
  3. Step 3: Cross multiply
    220,655.22x = 331,032 × 80,413.85
  4. Step 4: Simplify right side
    220,655.22x = 26,619,555,938.04
  5. Step 5: Solve for x
    x = 26,619,555,938.04/220,655.22
  6. Step 6: Final answer
    x = 120,638.69

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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.