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Finding the Fourth Proportional to 281,134.20, 421,045.20 and 275,496.60

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Solution

The fourth proportional to 281,134.20, 421,045.20 and 275,496.60 is: 412,601.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,134.20 : 421,045.20 = 275,496.60 : x
  2. Step 2: Convert to fraction form
    281,134.20/421,045.20 = 275,496.60/x
  3. Step 3: Cross multiply
    281,134.20x = 421,045.20 × 275,496.60
  4. Step 4: Simplify right side
    281,134.20x = 115,996,521,046.32
  5. Step 5: Solve for x
    x = 115,996,521,046.32/281,134.20
  6. Step 6: Final answer
    x = 412,601.96

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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.