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Finding the Fourth Proportional to 281,018.57, 421,500.51 and 154,617.26

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Solution

The fourth proportional to 281,018.57, 421,500.51 and 154,617.26 is: 231,910.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,018.57 : 421,500.51 = 154,617.26 : x
  2. Step 2: Convert to fraction form
    281,018.57/421,500.51 = 154,617.26/x
  3. Step 3: Cross multiply
    281,018.57x = 421,500.51 × 154,617.26
  4. Step 4: Simplify right side
    281,018.57x = 65,171,251,837.30
  5. Step 5: Solve for x
    x = 65,171,251,837.30/281,018.57
  6. Step 6: Final answer
    x = 231,910.84

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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.