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Finding the Fourth Proportional to 383,821.69, 529,113.21 and 268,737.65

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Solution

The fourth proportional to 383,821.69, 529,113.21 and 268,737.65 is: 370,465.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,821.69 : 529,113.21 = 268,737.65 : x
  2. Step 2: Convert to fraction form
    383,821.69/529,113.21 = 268,737.65/x
  3. Step 3: Cross multiply
    383,821.69x = 529,113.21 × 268,737.65
  4. Step 4: Simplify right side
    383,821.69x = 142,192,640,481.85
  5. Step 5: Solve for x
    x = 142,192,640,481.85/383,821.69
  6. Step 6: Final answer
    x = 370,465.36

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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.