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Finding the Fourth Proportional to 320,737.38, 480,773.89 and 263,981.15

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Solution

The fourth proportional to 320,737.38, 480,773.89 and 263,981.15 is: 395,698.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,737.38 : 480,773.89 = 263,981.15 : x
  2. Step 2: Convert to fraction form
    320,737.38/480,773.89 = 263,981.15/x
  3. Step 3: Cross multiply
    320,737.38x = 480,773.89 × 263,981.15
  4. Step 4: Simplify right side
    320,737.38x = 126,915,240,648.40
  5. Step 5: Solve for x
    x = 126,915,240,648.40/320,737.38
  6. Step 6: Final answer
    x = 395,698.31

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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.