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Finding the Fourth Proportional to 268,959.46, 403,322.52 and 91,418.80

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Solution

The fourth proportional to 268,959.46, 403,322.52 and 91,418.80 is: 137,088.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,959.46 : 403,322.52 = 91,418.80 : x
  2. Step 2: Convert to fraction form
    268,959.46/403,322.52 = 91,418.80/x
  3. Step 3: Cross multiply
    268,959.46x = 403,322.52 × 91,418.80
  4. Step 4: Simplify right side
    268,959.46x = 36,871,260,791.38
  5. Step 5: Solve for x
    x = 36,871,260,791.38/268,959.46
  6. Step 6: Final answer
    x = 137,088.54

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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.