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Finding the Fourth Proportional to 385,600.80, 578,186.64 and 119,287.20

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Solution

The fourth proportional to 385,600.80, 578,186.64 and 119,287.20 is: 178,864.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,600.80 : 578,186.64 = 119,287.20 : x
  2. Step 2: Convert to fraction form
    385,600.80/578,186.64 = 119,287.20/x
  3. Step 3: Cross multiply
    385,600.80x = 578,186.64 × 119,287.20
  4. Step 4: Simplify right side
    385,600.80x = 68,970,265,363.01
  5. Step 5: Solve for x
    x = 68,970,265,363.01/385,600.80
  6. Step 6: Final answer
    x = 178,864.42

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