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Finding the Fourth Proportional to 393,021.10, 541,819.92 and 332,348.32

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Solution

The fourth proportional to 393,021.10, 541,819.92 and 332,348.32 is: 458,176.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,021.10 : 541,819.92 = 332,348.32 : x
  2. Step 2: Convert to fraction form
    393,021.10/541,819.92 = 332,348.32/x
  3. Step 3: Cross multiply
    393,021.10x = 541,819.92 × 332,348.32
  4. Step 4: Simplify right side
    393,021.10x = 180,072,940,154.53
  5. Step 5: Solve for x
    x = 180,072,940,154.53/393,021.10
  6. Step 6: Final answer
    x = 458,176.27

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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.