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Finding the Fourth Proportional to 281,626.23, 422,440.11 and 81,951.42

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Solution

The fourth proportional to 281,626.23, 422,440.11 and 81,951.42 is: 122,927.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,626.23 : 422,440.11 = 81,951.42 : x
  2. Step 2: Convert to fraction form
    281,626.23/422,440.11 = 81,951.42/x
  3. Step 3: Cross multiply
    281,626.23x = 422,440.11 × 81,951.42
  4. Step 4: Simplify right side
    281,626.23x = 34,619,566,879.46
  5. Step 5: Solve for x
    x = 34,619,566,879.46/281,626.23
  6. Step 6: Final answer
    x = 122,927.35

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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.