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Finding the Fourth Proportional to 303,976.13, 455,964.20 and 82,360.13

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Solution

The fourth proportional to 303,976.13, 455,964.20 and 82,360.13 is: 123,540.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,976.13 : 455,964.20 = 82,360.13 : x
  2. Step 2: Convert to fraction form
    303,976.13/455,964.20 = 82,360.13/x
  3. Step 3: Cross multiply
    303,976.13x = 455,964.20 × 82,360.13
  4. Step 4: Simplify right side
    303,976.13x = 37,553,268,095.72
  5. Step 5: Solve for x
    x = 37,553,268,095.72/303,976.13
  6. Step 6: Final answer
    x = 123,540.19

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Similar ratio
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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.