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Finding the Fourth Proportional to 521,371.32, 782,181.82 and 217,596.57

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Solution

The fourth proportional to 521,371.32, 782,181.82 and 217,596.57 is: 326,446.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,371.32 : 782,181.82 = 217,596.57 : x
  2. Step 2: Convert to fraction form
    521,371.32/782,181.82 = 217,596.57/x
  3. Step 3: Cross multiply
    521,371.32x = 782,181.82 × 217,596.57
  4. Step 4: Simplify right side
    521,371.32x = 170,200,081,148.36
  5. Step 5: Solve for x
    x = 170,200,081,148.36/521,371.32
  6. Step 6: Final answer
    x = 326,446.96

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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.