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Finding the Fourth Proportional to 400,090.40, 599,329.20 and 249,869.60

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Solution

The fourth proportional to 400,090.40, 599,329.20 and 249,869.60 is: 374,300.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,090.40 : 599,329.20 = 249,869.60 : x
  2. Step 2: Convert to fraction form
    400,090.40/599,329.20 = 249,869.60/x
  3. Step 3: Cross multiply
    400,090.40x = 599,329.20 × 249,869.60
  4. Step 4: Simplify right side
    400,090.40x = 149,754,147,472.32
  5. Step 5: Solve for x
    x = 149,754,147,472.32/400,090.40
  6. Step 6: Final answer
    x = 374,300.78

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