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Finding the Fourth Proportional to 393,628.91, 543,282.05 and 246,521.97

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Solution

The fourth proportional to 393,628.91, 543,282.05 and 246,521.97 is: 340,246.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,628.91 : 543,282.05 = 246,521.97 : x
  2. Step 2: Convert to fraction form
    393,628.91/543,282.05 = 246,521.97/x
  3. Step 3: Cross multiply
    393,628.91x = 543,282.05 × 246,521.97
  4. Step 4: Simplify right side
    393,628.91x = 133,930,961,847.94
  5. Step 5: Solve for x
    x = 133,930,961,847.94/393,628.91
  6. Step 6: Final answer
    x = 340,246.77

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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.