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Finding the Fourth Proportional to 249,065.28, 343,711.20 and 135,890.40

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Solution

The fourth proportional to 249,065.28, 343,711.20 and 135,890.40 is: 187,529.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,065.28 : 343,711.20 = 135,890.40 : x
  2. Step 2: Convert to fraction form
    249,065.28/343,711.20 = 135,890.40/x
  3. Step 3: Cross multiply
    249,065.28x = 343,711.20 × 135,890.40
  4. Step 4: Simplify right side
    249,065.28x = 46,707,052,452.48
  5. Step 5: Solve for x
    x = 46,707,052,452.48/249,065.28
  6. Step 6: Final answer
    x = 187,529.36

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