Home / 281,285.36-388,229.12-213,183.54

Finding the Fourth Proportional to 281,285.36, 388,229.12 and 213,183.54

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Solution

The fourth proportional to 281,285.36, 388,229.12 and 213,183.54 is: 294,235.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,285.36 : 388,229.12 = 213,183.54 : x
  2. Step 2: Convert to fraction form
    281,285.36/388,229.12 = 213,183.54/x
  3. Step 3: Cross multiply
    281,285.36x = 388,229.12 × 213,183.54
  4. Step 4: Simplify right side
    281,285.36x = 82,764,057,866.21
  5. Step 5: Solve for x
    x = 82,764,057,866.21/281,285.36
  6. Step 6: Final answer
    x = 294,235.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.