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Finding the Fourth Proportional to 422,621.46, 633,698.91 and 173,478.42

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Solution

The fourth proportional to 422,621.46, 633,698.91 and 173,478.42 is: 260,121.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,621.46 : 633,698.91 = 173,478.42 : x
  2. Step 2: Convert to fraction form
    422,621.46/633,698.91 = 173,478.42/x
  3. Step 3: Cross multiply
    422,621.46x = 633,698.91 × 173,478.42
  4. Step 4: Simplify right side
    422,621.46x = 109,933,085,662.52
  5. Step 5: Solve for x
    x = 109,933,085,662.52/422,621.46
  6. Step 6: Final answer
    x = 260,121.87

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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.