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Finding the Fourth Proportional to 323,976.44, 485,931.84 and 87,343.04

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Solution

The fourth proportional to 323,976.44, 485,931.84 and 87,343.04 is: 131,005.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,976.44 : 485,931.84 = 87,343.04 : x
  2. Step 2: Convert to fraction form
    323,976.44/485,931.84 = 87,343.04/x
  3. Step 3: Cross multiply
    323,976.44x = 485,931.84 × 87,343.04
  4. Step 4: Simplify right side
    323,976.44x = 42,442,764,138.39
  5. Step 5: Solve for x
    x = 42,442,764,138.39/323,976.44
  6. Step 6: Final answer
    x = 131,005.71

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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.