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Finding the Fourth Proportional to 303,878.32, 455,678.88 and 126,279.52

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Solution

The fourth proportional to 303,878.32, 455,678.88 and 126,279.52 is: 189,361.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,878.32 : 455,678.88 = 126,279.52 : x
  2. Step 2: Convert to fraction form
    303,878.32/455,678.88 = 126,279.52/x
  3. Step 3: Cross multiply
    303,878.32x = 455,678.88 × 126,279.52
  4. Step 4: Simplify right side
    303,878.32x = 57,542,910,240.54
  5. Step 5: Solve for x
    x = 57,542,910,240.54/303,878.32
  6. Step 6: Final answer
    x = 189,361.68

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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.