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Finding the Fourth Proportional to 215,379.92, 323,118.05 and 65,631.92

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Solution

The fourth proportional to 215,379.92, 323,118.05 and 65,631.92 is: 98,462.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,379.92 : 323,118.05 = 65,631.92 : x
  2. Step 2: Convert to fraction form
    215,379.92/323,118.05 = 65,631.92/x
  3. Step 3: Cross multiply
    215,379.92x = 323,118.05 × 65,631.92
  4. Step 4: Simplify right side
    215,379.92x = 21,206,856,064.41
  5. Step 5: Solve for x
    x = 21,206,856,064.41/215,379.92
  6. Step 6: Final answer
    x = 98,462.55

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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.