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Finding the Fourth Proportional to 474,638.20, 711,957.30 and 142,214.20

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Solution

The fourth proportional to 474,638.20, 711,957.30 and 142,214.20 is: 213,321.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    474,638.20 : 711,957.30 = 142,214.20 : x
  2. Step 2: Convert to fraction form
    474,638.20/711,957.30 = 142,214.20/x
  3. Step 3: Cross multiply
    474,638.20x = 711,957.30 × 142,214.20
  4. Step 4: Simplify right side
    474,638.20x = 101,250,437,853.66
  5. Step 5: Solve for x
    x = 101,250,437,853.66/474,638.20
  6. Step 6: Final answer
    x = 213,321.30

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