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Finding the Fourth Proportional to 328,301.55, 492,087.83 and 128,555.55

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Solution

The fourth proportional to 328,301.55, 492,087.83 and 128,555.55 is: 192,690.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,301.55 : 492,087.83 = 128,555.55 : x
  2. Step 2: Convert to fraction form
    328,301.55/492,087.83 = 128,555.55/x
  3. Step 3: Cross multiply
    328,301.55x = 492,087.83 × 128,555.55
  4. Step 4: Simplify right side
    328,301.55x = 63,260,620,991.18
  5. Step 5: Solve for x
    x = 63,260,620,991.18/328,301.55
  6. Step 6: Final answer
    x = 192,690.59

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