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Finding the Fourth Proportional to 215,697.20, 323,302.80 and 103,431.20

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Solution

The fourth proportional to 215,697.20, 323,302.80 and 103,431.20 is: 155,030.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,697.20 : 323,302.80 = 103,431.20 : x
  2. Step 2: Convert to fraction form
    215,697.20/323,302.80 = 103,431.20/x
  3. Step 3: Cross multiply
    215,697.20x = 323,302.80 × 103,431.20
  4. Step 4: Simplify right side
    215,697.20x = 33,439,596,567.36
  5. Step 5: Solve for x
    x = 33,439,596,567.36/215,697.20
  6. Step 6: Final answer
    x = 155,030.28

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