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Finding the Fourth Proportional to 281,883.85, 388,991.57 and 161,022.74

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Solution

The fourth proportional to 281,883.85, 388,991.57 and 161,022.74 is: 222,206.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,883.85 : 388,991.57 = 161,022.74 : x
  2. Step 2: Convert to fraction form
    281,883.85/388,991.57 = 161,022.74/x
  3. Step 3: Cross multiply
    281,883.85x = 388,991.57 × 161,022.74
  4. Step 4: Simplify right side
    281,883.85x = 62,636,485,688.23
  5. Step 5: Solve for x
    x = 62,636,485,688.23/281,883.85
  6. Step 6: Final answer
    x = 222,206.72

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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.