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Finding the Fourth Proportional to 479,553.86, 661,800.35 and 261,775.44

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Solution

The fourth proportional to 479,553.86, 661,800.35 and 261,775.44 is: 361,258.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,553.86 : 661,800.35 = 261,775.44 : x
  2. Step 2: Convert to fraction form
    479,553.86/661,800.35 = 261,775.44/x
  3. Step 3: Cross multiply
    479,553.86x = 661,800.35 × 261,775.44
  4. Step 4: Simplify right side
    479,553.86x = 173,243,073,195.53
  5. Step 5: Solve for x
    x = 173,243,073,195.53/479,553.86
  6. Step 6: Final answer
    x = 361,258.85

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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.