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Finding the Fourth Proportional to 281,114.80, 421,672.20 and 163,089.70

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Solution

The fourth proportional to 281,114.80, 421,672.20 and 163,089.70 is: 244,634.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,114.80 : 421,672.20 = 163,089.70 : x
  2. Step 2: Convert to fraction form
    281,114.80/421,672.20 = 163,089.70/x
  3. Step 3: Cross multiply
    281,114.80x = 421,672.20 × 163,089.70
  4. Step 4: Simplify right side
    281,114.80x = 68,770,392,596.34
  5. Step 5: Solve for x
    x = 68,770,392,596.34/281,114.80
  6. Step 6: Final answer
    x = 244,634.55

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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.