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Finding the Fourth Proportional to 215,813.62, 323,601.36 and 115,945.48

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Solution

The fourth proportional to 215,813.62, 323,601.36 and 115,945.48 is: 173,854.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,813.62 : 323,601.36 = 115,945.48 : x
  2. Step 2: Convert to fraction form
    215,813.62/323,601.36 = 115,945.48/x
  3. Step 3: Cross multiply
    215,813.62x = 323,601.36 × 115,945.48
  4. Step 4: Simplify right side
    215,813.62x = 37,520,115,013.85
  5. Step 5: Solve for x
    x = 37,520,115,013.85/215,813.62
  6. Step 6: Final answer
    x = 173,854.25

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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.