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Finding the Fourth Proportional to 361,901.80, 541,815.90 and 320,429.80

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Solution

The fourth proportional to 361,901.80, 541,815.90 and 320,429.80 is: 479,726.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,901.80 : 541,815.90 = 320,429.80 : x
  2. Step 2: Convert to fraction form
    361,901.80/541,815.90 = 320,429.80/x
  3. Step 3: Cross multiply
    361,901.80x = 541,815.90 × 320,429.80
  4. Step 4: Simplify right side
    361,901.80x = 173,613,960,473.82
  5. Step 5: Solve for x
    x = 173,613,960,473.82/361,901.80
  6. Step 6: Final answer
    x = 479,726.71

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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.