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Finding the Fourth Proportional to 318,618.36, 477,928.88 and 129,082.40

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Solution

The fourth proportional to 318,618.36, 477,928.88 and 129,082.40 is: 193,624.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,618.36 : 477,928.88 = 129,082.40 : x
  2. Step 2: Convert to fraction form
    318,618.36/477,928.88 = 129,082.40/x
  3. Step 3: Cross multiply
    318,618.36x = 477,928.88 × 129,082.40
  4. Step 4: Simplify right side
    318,618.36x = 61,692,206,859.71
  5. Step 5: Solve for x
    x = 61,692,206,859.71/318,618.36
  6. Step 6: Final answer
    x = 193,624.14

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