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Finding the Fourth Proportional to 320,585.76, 442,080.72 and 213,173.28

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Solution

The fourth proportional to 320,585.76, 442,080.72 and 213,173.28 is: 293,961.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,585.76 : 442,080.72 = 213,173.28 : x
  2. Step 2: Convert to fraction form
    320,585.76/442,080.72 = 213,173.28/x
  3. Step 3: Cross multiply
    320,585.76x = 442,080.72 × 213,173.28
  4. Step 4: Simplify right side
    320,585.76x = 94,239,797,107.16
  5. Step 5: Solve for x
    x = 94,239,797,107.16/320,585.76
  6. Step 6: Final answer
    x = 293,961.27

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