Home / 217,471.45-326,128.91-75,278.09

Finding the Fourth Proportional to 217,471.45, 326,128.91 and 75,278.09

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Solution

The fourth proportional to 217,471.45, 326,128.91 and 75,278.09 is: 112,890.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,471.45 : 326,128.91 = 75,278.09 : x
  2. Step 2: Convert to fraction form
    217,471.45/326,128.91 = 75,278.09/x
  3. Step 3: Cross multiply
    217,471.45x = 326,128.91 × 75,278.09
  4. Step 4: Simplify right side
    217,471.45x = 24,550,361,438.58
  5. Step 5: Solve for x
    x = 24,550,361,438.58/217,471.45
  6. Step 6: Final answer
    x = 112,890.04

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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.