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Finding the Fourth Proportional to 388,353.50, 535,893.71 and 216,258.47

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Solution

The fourth proportional to 388,353.50, 535,893.71 and 216,258.47 is: 298,417.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,353.50 : 535,893.71 = 216,258.47 : x
  2. Step 2: Convert to fraction form
    388,353.50/535,893.71 = 216,258.47/x
  3. Step 3: Cross multiply
    388,353.50x = 535,893.71 × 216,258.47
  4. Step 4: Simplify right side
    388,353.50x = 115,891,555,687.60
  5. Step 5: Solve for x
    x = 115,891,555,687.60/388,353.50
  6. Step 6: Final answer
    x = 298,417.69

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