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Finding the Fourth Proportional to 425,364.64, 638,110.38 and 151,789.54

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Solution

The fourth proportional to 425,364.64, 638,110.38 and 151,789.54 is: 227,706.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,364.64 : 638,110.38 = 151,789.54 : x
  2. Step 2: Convert to fraction form
    425,364.64/638,110.38 = 151,789.54/x
  3. Step 3: Cross multiply
    425,364.64x = 638,110.38 × 151,789.54
  4. Step 4: Simplify right side
    425,364.64x = 96,858,481,049.43
  5. Step 5: Solve for x
    x = 96,858,481,049.43/425,364.64
  6. Step 6: Final answer
    x = 227,706.94

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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.