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Finding the Fourth Proportional to 303,944.80, 455,917.20 and 82,328.80

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Solution

The fourth proportional to 303,944.80, 455,917.20 and 82,328.80 is: 123,493.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,944.80 : 455,917.20 = 82,328.80 : x
  2. Step 2: Convert to fraction form
    303,944.80/455,917.20 = 82,328.80/x
  3. Step 3: Cross multiply
    303,944.80x = 455,917.20 × 82,328.80
  4. Step 4: Simplify right side
    303,944.80x = 37,535,115,975.36
  5. Step 5: Solve for x
    x = 37,535,115,975.36/303,944.80
  6. Step 6: Final answer
    x = 123,493.20

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1.5x scale

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.