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Finding the Fourth Proportional to 226,299.72, 312,258.90 and 130,787.97

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Solution

The fourth proportional to 226,299.72, 312,258.90 and 130,787.97 is: 180,467.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    226,299.72 : 312,258.90 = 130,787.97 : x
  2. Step 2: Convert to fraction form
    226,299.72/312,258.90 = 130,787.97/x
  3. Step 3: Cross multiply
    226,299.72x = 312,258.90 × 130,787.97
  4. Step 4: Simplify right side
    226,299.72x = 40,839,707,645.43
  5. Step 5: Solve for x
    x = 40,839,707,645.43/226,299.72
  6. Step 6: Final answer
    x = 180,467.34

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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.