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Finding the Fourth Proportional to 217,744, 326,616 and 70,000

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Solution

The fourth proportional to 217,744, 326,616 and 70,000 is: 105,000

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,744 : 326,616 = 70,000 : x
  2. Step 2: Convert to fraction form
    217,744/326,616 = 70,000/x
  3. Step 3: Cross multiply
    217,744x = 326,616 × 70,000
  4. Step 4: Simplify right side
    217,744x = 22,863,120,000
  5. Step 5: Solve for x
    x = 22,863,120,000/217,744
  6. Step 6: Final answer
    x = 105,000

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