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Finding the Fourth Proportional to 425,845.92, 638,418.48 and 169,704.48

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Solution

The fourth proportional to 425,845.92, 638,418.48 and 169,704.48 is: 254,417.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,845.92 : 638,418.48 = 169,704.48 : x
  2. Step 2: Convert to fraction form
    425,845.92/638,418.48 = 169,704.48/x
  3. Step 3: Cross multiply
    425,845.92x = 638,418.48 × 169,704.48
  4. Step 4: Simplify right side
    425,845.92x = 108,342,476,170.79
  5. Step 5: Solve for x
    x = 108,342,476,170.79/425,845.92
  6. Step 6: Final answer
    x = 254,417.08

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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.