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Finding the Fourth Proportional to 280,677.66, 421,121.25 and 168,438.39

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Solution

The fourth proportional to 280,677.66, 421,121.25 and 168,438.39 is: 252,720.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,677.66 : 421,121.25 = 168,438.39 : x
  2. Step 2: Convert to fraction form
    280,677.66/421,121.25 = 168,438.39/x
  3. Step 3: Cross multiply
    280,677.66x = 421,121.25 × 168,438.39
  4. Step 4: Simplify right side
    280,677.66x = 70,932,985,344.79
  5. Step 5: Solve for x
    x = 70,932,985,344.79/280,677.66
  6. Step 6: Final answer
    x = 252,720.45

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