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Finding the Fourth Proportional to 303,979.70, 455,278.35 and 192,005.30

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Solution

The fourth proportional to 303,979.70, 455,278.35 and 192,005.30 is: 287,571.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,979.70 : 455,278.35 = 192,005.30 : x
  2. Step 2: Convert to fraction form
    303,979.70/455,278.35 = 192,005.30/x
  3. Step 3: Cross multiply
    303,979.70x = 455,278.35 × 192,005.30
  4. Step 4: Simplify right side
    303,979.70x = 87,415,856,175.26
  5. Step 5: Solve for x
    x = 87,415,856,175.26/303,979.70
  6. Step 6: Final answer
    x = 287,571.36

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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.