Home / 221,579.82-332,413.47-81,339.66

Finding the Fourth Proportional to 221,579.82, 332,413.47 and 81,339.66

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Solution

The fourth proportional to 221,579.82, 332,413.47 and 81,339.66 is: 122,025.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,579.82 : 332,413.47 = 81,339.66 : x
  2. Step 2: Convert to fraction form
    221,579.82/332,413.47 = 81,339.66/x
  3. Step 3: Cross multiply
    221,579.82x = 332,413.47 × 81,339.66
  4. Step 4: Simplify right side
    221,579.82x = 27,038,398,629.22
  5. Step 5: Solve for x
    x = 27,038,398,629.22/221,579.82
  6. Step 6: Final answer
    x = 122,025.55

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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.