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Finding the Fourth Proportional to 281,434.91, 422,154.99 and 71,072.64

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Solution

The fourth proportional to 281,434.91, 422,154.99 and 71,072.64 is: 106,609.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,434.91 : 422,154.99 = 71,072.64 : x
  2. Step 2: Convert to fraction form
    281,434.91/422,154.99 = 71,072.64/x
  3. Step 3: Cross multiply
    281,434.91x = 422,154.99 × 71,072.64
  4. Step 4: Simplify right side
    281,434.91x = 30,003,669,628.47
  5. Step 5: Solve for x
    x = 30,003,669,628.47/281,434.91
  6. Step 6: Final answer
    x = 106,609.62

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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.