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Finding the Fourth Proportional to 620,558.80, 930,947.55 and 221,431.30

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Solution

The fourth proportional to 620,558.80, 930,947.55 and 221,431.30 is: 332,185.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,558.80 : 930,947.55 = 221,431.30 : x
  2. Step 2: Convert to fraction form
    620,558.80/930,947.55 = 221,431.30/x
  3. Step 3: Cross multiply
    620,558.80x = 930,947.55 × 221,431.30
  4. Step 4: Simplify right side
    620,558.80x = 206,140,926,228.32
  5. Step 5: Solve for x
    x = 206,140,926,228.32/620,558.80
  6. Step 6: Final answer
    x = 332,185.97

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