Home / 381,919.64-572,336.34-281,288.48

Finding the Fourth Proportional to 381,919.64, 572,336.34 and 281,288.48

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Solution

The fourth proportional to 381,919.64, 572,336.34 and 281,288.48 is: 421,532.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,919.64 : 572,336.34 = 281,288.48 : x
  2. Step 2: Convert to fraction form
    381,919.64/572,336.34 = 281,288.48/x
  3. Step 3: Cross multiply
    381,919.64x = 572,336.34 × 281,288.48
  4. Step 4: Simplify right side
    381,919.64x = 160,991,619,127.36
  5. Step 5: Solve for x
    x = 160,991,619,127.36/381,919.64
  6. Step 6: Final answer
    x = 421,532.71

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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.