Home / 221,288.69-331,981.83-131,413.12

Finding the Fourth Proportional to 221,288.69, 331,981.83 and 131,413.12

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Solution

The fourth proportional to 221,288.69, 331,981.83 and 131,413.12 is: 197,148.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,288.69 : 331,981.83 = 131,413.12 : x
  2. Step 2: Convert to fraction form
    221,288.69/331,981.83 = 131,413.12/x
  3. Step 3: Cross multiply
    221,288.69x = 331,981.83 × 131,413.12
  4. Step 4: Simplify right side
    221,288.69x = 43,626,767,233.66
  5. Step 5: Solve for x
    x = 43,626,767,233.66/221,288.69
  6. Step 6: Final answer
    x = 197,148.65

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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.