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Finding the Fourth Proportional to 229,140.69, 343,629.02 and 79,340.78

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Solution

The fourth proportional to 229,140.69, 343,629.02 and 79,340.78 is: 118,982.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,140.69 : 343,629.02 = 79,340.78 : x
  2. Step 2: Convert to fraction form
    229,140.69/343,629.02 = 79,340.78/x
  3. Step 3: Cross multiply
    229,140.69x = 343,629.02 × 79,340.78
  4. Step 4: Simplify right side
    229,140.69x = 27,263,792,362.59
  5. Step 5: Solve for x
    x = 27,263,792,362.59/229,140.69
  6. Step 6: Final answer
    x = 118,982.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.