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Finding the Fourth Proportional to 342,722.92, 472,891.96 and 221,847.44

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Solution

The fourth proportional to 342,722.92, 472,891.96 and 221,847.44 is: 306,106.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,722.92 : 472,891.96 = 221,847.44 : x
  2. Step 2: Convert to fraction form
    342,722.92/472,891.96 = 221,847.44/x
  3. Step 3: Cross multiply
    342,722.92x = 472,891.96 × 221,847.44
  4. Step 4: Simplify right side
    342,722.92x = 104,909,870,722.58
  5. Step 5: Solve for x
    x = 104,909,870,722.58/342,722.92
  6. Step 6: Final answer
    x = 306,106.96

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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.