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Finding the Fourth Proportional to 323,976.34, 485,931.70 and 87,342.94

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Solution

The fourth proportional to 323,976.34, 485,931.70 and 87,342.94 is: 131,005.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,976.34 : 485,931.70 = 87,342.94 : x
  2. Step 2: Convert to fraction form
    323,976.34/485,931.70 = 87,342.94/x
  3. Step 3: Cross multiply
    323,976.34x = 485,931.70 × 87,342.94
  4. Step 4: Simplify right side
    323,976.34x = 42,442,704,033.79
  5. Step 5: Solve for x
    x = 42,442,704,033.79/323,976.34
  6. Step 6: Final answer
    x = 131,005.57

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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.