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Finding the Fourth Proportional to 281,894.81, 388,990.64 and 161,012.03

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Solution

The fourth proportional to 281,894.81, 388,990.64 and 161,012.03 is: 222,182.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,894.81 : 388,990.64 = 161,012.03 : x
  2. Step 2: Convert to fraction form
    281,894.81/388,990.64 = 161,012.03/x
  3. Step 3: Cross multiply
    281,894.81x = 388,990.64 × 161,012.03
  4. Step 4: Simplify right side
    281,894.81x = 62,632,171,792.34
  5. Step 5: Solve for x
    x = 62,632,171,792.34/281,894.81
  6. Step 6: Final answer
    x = 222,182.78

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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.