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Finding the Fourth Proportional to 220,413.51, 331,007.90 and 217,258.11

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Solution

The fourth proportional to 220,413.51, 331,007.90 and 217,258.11 is: 326,269.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,413.51 : 331,007.90 = 217,258.11 : x
  2. Step 2: Convert to fraction form
    220,413.51/331,007.90 = 217,258.11/x
  3. Step 3: Cross multiply
    220,413.51x = 331,007.90 × 217,258.11
  4. Step 4: Simplify right side
    220,413.51x = 71,914,149,662.78
  5. Step 5: Solve for x
    x = 71,914,149,662.78/220,413.51
  6. Step 6: Final answer
    x = 326,269.25

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1.5x scale

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.