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Finding the Fourth Proportional to 294,090.40, 439,969.20 and 255,080.80

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Solution

The fourth proportional to 294,090.40, 439,969.20 and 255,080.80 is: 381,609.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,090.40 : 439,969.20 = 255,080.80 : x
  2. Step 2: Convert to fraction form
    294,090.40/439,969.20 = 255,080.80/x
  3. Step 3: Cross multiply
    294,090.40x = 439,969.20 × 255,080.80
  4. Step 4: Simplify right side
    294,090.40x = 112,227,695,511.36
  5. Step 5: Solve for x
    x = 112,227,695,511.36/294,090.40
  6. Step 6: Final answer
    x = 381,609.52

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