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Finding the Fourth Proportional to 303,358.20, 455,037.30 and 208,879.80

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Solution

The fourth proportional to 303,358.20, 455,037.30 and 208,879.80 is: 313,319.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,358.20 : 455,037.30 = 208,879.80 : x
  2. Step 2: Convert to fraction form
    303,358.20/455,037.30 = 208,879.80/x
  3. Step 3: Cross multiply
    303,358.20x = 455,037.30 × 208,879.80
  4. Step 4: Simplify right side
    303,358.20x = 95,048,100,216.54
  5. Step 5: Solve for x
    x = 95,048,100,216.54/303,358.20
  6. Step 6: Final answer
    x = 313,319.70

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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.