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Finding the Fourth Proportional to 339,351.81, 509,093.30 and 128,973.35

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Solution

The fourth proportional to 339,351.81, 509,093.30 and 128,973.35 is: 193,484.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,351.81 : 509,093.30 = 128,973.35 : x
  2. Step 2: Convert to fraction form
    339,351.81/509,093.30 = 128,973.35/x
  3. Step 3: Cross multiply
    339,351.81x = 509,093.30 × 128,973.35
  4. Step 4: Simplify right side
    339,351.81x = 65,659,465,173.22
  5. Step 5: Solve for x
    x = 65,659,465,173.22/339,351.81
  6. Step 6: Final answer
    x = 193,484.94

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