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Finding the Fourth Proportional to 260,358.71, 388,807.81 and 257,540.45

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Solution

The fourth proportional to 260,358.71, 388,807.81 and 257,540.45 is: 384,599.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    260,358.71 : 388,807.81 = 257,540.45 : x
  2. Step 2: Convert to fraction form
    260,358.71/388,807.81 = 257,540.45/x
  3. Step 3: Cross multiply
    260,358.71x = 388,807.81 × 257,540.45
  4. Step 4: Simplify right side
    260,358.71x = 100,133,737,211.69
  5. Step 5: Solve for x
    x = 100,133,737,211.69/260,358.71
  6. Step 6: Final answer
    x = 384,599.15

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