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Finding the Fourth Proportional to 196,408.40, 294,766.20 and 91,240.40

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Solution

The fourth proportional to 196,408.40, 294,766.20 and 91,240.40 is: 136,931.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,408.40 : 294,766.20 = 91,240.40 : x
  2. Step 2: Convert to fraction form
    196,408.40/294,766.20 = 91,240.40/x
  3. Step 3: Cross multiply
    196,408.40x = 294,766.20 × 91,240.40
  4. Step 4: Simplify right side
    196,408.40x = 26,894,585,994.48
  5. Step 5: Solve for x
    x = 26,894,585,994.48/196,408.40
  6. Step 6: Final answer
    x = 136,931.95

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