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Finding the Fourth Proportional to 268,954.44, 403,315 and 91,413.78

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Solution

The fourth proportional to 268,954.44, 403,315 and 91,413.78 is: 137,081.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,954.44 : 403,315 = 91,413.78 : x
  2. Step 2: Convert to fraction form
    268,954.44/403,315 = 91,413.78/x
  3. Step 3: Cross multiply
    268,954.44x = 403,315 × 91,413.78
  4. Step 4: Simplify right side
    268,954.44x = 36,868,548,680.70
  5. Step 5: Solve for x
    x = 36,868,548,680.70/268,954.44
  6. Step 6: Final answer
    x = 137,081.02

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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.