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Finding the Fourth Proportional to 393,374.78, 542,817.05 and 221,265.17

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Solution

The fourth proportional to 393,374.78, 542,817.05 and 221,265.17 is: 305,323.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,374.78 : 542,817.05 = 221,265.17 : x
  2. Step 2: Convert to fraction form
    393,374.78/542,817.05 = 221,265.17/x
  3. Step 3: Cross multiply
    393,374.78x = 542,817.05 × 221,265.17
  4. Step 4: Simplify right side
    393,374.78x = 120,106,505,062.30
  5. Step 5: Solve for x
    x = 120,106,505,062.30/393,374.78
  6. Step 6: Final answer
    x = 305,323.35

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