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Finding the Fourth Proportional to 643,941.20, 965,911.80 and 223,259.60

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Solution

The fourth proportional to 643,941.20, 965,911.80 and 223,259.60 is: 334,889.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,941.20 : 965,911.80 = 223,259.60 : x
  2. Step 2: Convert to fraction form
    643,941.20/965,911.80 = 223,259.60/x
  3. Step 3: Cross multiply
    643,941.20x = 965,911.80 × 223,259.60
  4. Step 4: Simplify right side
    643,941.20x = 215,649,082,103.28
  5. Step 5: Solve for x
    x = 215,649,082,103.28/643,941.20
  6. Step 6: Final answer
    x = 334,889.40

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