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Finding the Fourth Proportional to 222,872.40, 307,489.11 and 127,311.44

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Solution

The fourth proportional to 222,872.40, 307,489.11 and 127,311.44 is: 175,647.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    222,872.40 : 307,489.11 = 127,311.44 : x
  2. Step 2: Convert to fraction form
    222,872.40/307,489.11 = 127,311.44/x
  3. Step 3: Cross multiply
    222,872.40x = 307,489.11 × 127,311.44
  4. Step 4: Simplify right side
    222,872.40x = 39,146,879,840.97
  5. Step 5: Solve for x
    x = 39,146,879,840.97/222,872.40
  6. Step 6: Final answer
    x = 175,647.05

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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.