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Finding the Fourth Proportional to 253,183.70, 379,714.80 and 146,336.60

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Solution

The fourth proportional to 253,183.70, 379,714.80 and 146,336.60 is: 219,469.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,183.70 : 379,714.80 = 146,336.60 : x
  2. Step 2: Convert to fraction form
    253,183.70/379,714.80 = 146,336.60/x
  3. Step 3: Cross multiply
    253,183.70x = 379,714.80 × 146,336.60
  4. Step 4: Simplify right side
    253,183.70x = 55,566,172,801.68
  5. Step 5: Solve for x
    x = 55,566,172,801.68/253,183.70
  6. Step 6: Final answer
    x = 219,469.79

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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.