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Finding the Fourth Proportional to 305,983.44, 459,154.80 and 128,476.80

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Solution

The fourth proportional to 305,983.44, 459,154.80 and 128,476.80 is: 192,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,983.44 : 459,154.80 = 128,476.80 : x
  2. Step 2: Convert to fraction form
    305,983.44/459,154.80 = 128,476.80/x
  3. Step 3: Cross multiply
    305,983.44x = 459,154.80 × 128,476.80
  4. Step 4: Simplify right side
    305,983.44x = 58,990,739,408.64
  5. Step 5: Solve for x
    x = 58,990,739,408.64/305,983.44
  6. Step 6: Final answer
    x = 192,790.63

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