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Finding the Fourth Proportional to 484,238.20, 726,138.60 and 217,861.60

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Solution

The fourth proportional to 484,238.20, 726,138.60 and 217,861.60 is: 326,694.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,238.20 : 726,138.60 = 217,861.60 : x
  2. Step 2: Convert to fraction form
    484,238.20/726,138.60 = 217,861.60/x
  3. Step 3: Cross multiply
    484,238.20x = 726,138.60 × 217,861.60
  4. Step 4: Simplify right side
    484,238.20x = 158,197,717,217.76
  5. Step 5: Solve for x
    x = 158,197,717,217.76/484,238.20
  6. Step 6: Final answer
    x = 326,694.01

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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.