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Finding the Fourth Proportional to 338,569.49, 507,706.58 and 128,059.81

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Solution

The fourth proportional to 338,569.49, 507,706.58 and 128,059.81 is: 192,033.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,569.49 : 507,706.58 = 128,059.81 : x
  2. Step 2: Convert to fraction form
    338,569.49/507,706.58 = 128,059.81/x
  3. Step 3: Cross multiply
    338,569.49x = 507,706.58 × 128,059.81
  4. Step 4: Simplify right side
    338,569.49x = 65,016,807,221.43
  5. Step 5: Solve for x
    x = 65,016,807,221.43/338,569.49
  6. Step 6: Final answer
    x = 192,033.86

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