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Finding the Fourth Proportional to 368,843.60, 553,265.40 and 256,869.20

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Solution

The fourth proportional to 368,843.60, 553,265.40 and 256,869.20 is: 385,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,843.60 : 553,265.40 = 256,869.20 : x
  2. Step 2: Convert to fraction form
    368,843.60/553,265.40 = 256,869.20/x
  3. Step 3: Cross multiply
    368,843.60x = 553,265.40 × 256,869.20
  4. Step 4: Simplify right side
    368,843.60x = 142,116,840,685.68
  5. Step 5: Solve for x
    x = 142,116,840,685.68/368,843.60
  6. Step 6: Final answer
    x = 385,303.80

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