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Finding the Fourth Proportional to 352,086.62, 485,866.41 and 208,760.90

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Solution

The fourth proportional to 352,086.62, 485,866.41 and 208,760.90 is: 288,082.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,086.62 : 485,866.41 = 208,760.90 : x
  2. Step 2: Convert to fraction form
    352,086.62/485,866.41 = 208,760.90/x
  3. Step 3: Cross multiply
    352,086.62x = 485,866.41 × 208,760.90
  4. Step 4: Simplify right side
    352,086.62x = 101,429,906,602.04
  5. Step 5: Solve for x
    x = 101,429,906,602.04/352,086.62
  6. Step 6: Final answer
    x = 288,082.26

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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.