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Finding the Fourth Proportional to 322,079.06, 480,949.68 and 263,031.86

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Solution

The fourth proportional to 322,079.06, 480,949.68 and 263,031.86 is: 392,776.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,079.06 : 480,949.68 = 263,031.86 : x
  2. Step 2: Convert to fraction form
    322,079.06/480,949.68 = 263,031.86/x
  3. Step 3: Cross multiply
    322,079.06x = 480,949.68 × 263,031.86
  4. Step 4: Simplify right side
    322,079.06x = 126,505,088,896.81
  5. Step 5: Solve for x
    x = 126,505,088,896.81/322,079.06
  6. Step 6: Final answer
    x = 392,776.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.