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Finding the Fourth Proportional to 281,574.65, 422,363.39 and 71,212.79

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Solution

The fourth proportional to 281,574.65, 422,363.39 and 71,212.79 is: 106,819.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,574.65 : 422,363.39 = 71,212.79 : x
  2. Step 2: Convert to fraction form
    281,574.65/422,363.39 = 71,212.79/x
  3. Step 3: Cross multiply
    281,574.65x = 422,363.39 × 71,212.79
  4. Step 4: Simplify right side
    281,574.65x = 30,077,672,927.88
  5. Step 5: Solve for x
    x = 30,077,672,927.88/281,574.65
  6. Step 6: Final answer
    x = 106,819.54

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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.