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Finding the Fourth Proportional to 268,954.43, 403,315 and 91,413.77

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Solution

The fourth proportional to 268,954.43, 403,315 and 91,413.77 is: 137,081.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,954.43 : 403,315 = 91,413.77 : x
  2. Step 2: Convert to fraction form
    268,954.43/403,315 = 91,413.77/x
  3. Step 3: Cross multiply
    268,954.43x = 403,315 × 91,413.77
  4. Step 4: Simplify right side
    268,954.43x = 36,868,544,647.55
  5. Step 5: Solve for x
    x = 36,868,544,647.55/268,954.43
  6. Step 6: Final answer
    x = 137,081.01

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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.