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Finding the Fourth Proportional to 281,891.52, 388,995.48 and 161,008.92

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Solution

The fourth proportional to 281,891.52, 388,995.48 and 161,008.92 is: 222,183.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,891.52 : 388,995.48 = 161,008.92 : x
  2. Step 2: Convert to fraction form
    281,891.52/388,995.48 = 161,008.92/x
  3. Step 3: Cross multiply
    281,891.52x = 388,995.48 × 161,008.92
  4. Step 4: Simplify right side
    281,891.52x = 62,631,742,119.68
  5. Step 5: Solve for x
    x = 62,631,742,119.68/281,891.52
  6. Step 6: Final answer
    x = 222,183.85

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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.