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Finding the Fourth Proportional to 200,426.46, 276,455.60 and 128,896.98

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Solution

The fourth proportional to 200,426.46, 276,455.60 and 128,896.98 is: 177,792.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,426.46 : 276,455.60 = 128,896.98 : x
  2. Step 2: Convert to fraction form
    200,426.46/276,455.60 = 128,896.98/x
  3. Step 3: Cross multiply
    200,426.46x = 276,455.60 × 128,896.98
  4. Step 4: Simplify right side
    200,426.46x = 35,634,291,944.09
  5. Step 5: Solve for x
    x = 35,634,291,944.09/200,426.46
  6. Step 6: Final answer
    x = 177,792.35

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