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Finding the Fourth Proportional to 267,631.40, 401,447.79 and 90,263.00

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Solution

The fourth proportional to 267,631.40, 401,447.79 and 90,263.00 is: 135,394.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,631.40 : 401,447.79 = 90,263.00 : x
  2. Step 2: Convert to fraction form
    267,631.40/401,447.79 = 90,263.00/x
  3. Step 3: Cross multiply
    267,631.40x = 401,447.79 × 90,263.00
  4. Step 4: Simplify right side
    267,631.40x = 36,235,879,861.53
  5. Step 5: Solve for x
    x = 36,235,879,861.53/267,631.40
  6. Step 6: Final answer
    x = 135,394.73

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