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Finding the Fourth Proportional to 387,942.36, 535,316.94 and 218,172.84

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Solution

The fourth proportional to 387,942.36, 535,316.94 and 218,172.84 is: 301,054.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,942.36 : 535,316.94 = 218,172.84 : x
  2. Step 2: Convert to fraction form
    387,942.36/535,316.94 = 218,172.84/x
  3. Step 3: Cross multiply
    387,942.36x = 535,316.94 × 218,172.84
  4. Step 4: Simplify right side
    387,942.36x = 116,791,617,099.91
  5. Step 5: Solve for x
    x = 116,791,617,099.91/387,942.36
  6. Step 6: Final answer
    x = 301,054.05

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