Home / 215,379.63-323,217.07-75,138.26

Finding the Fourth Proportional to 215,379.63, 323,217.07 and 75,138.26

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Solution

The fourth proportional to 215,379.63, 323,217.07 and 75,138.26 is: 112,758.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,379.63 : 323,217.07 = 75,138.26 : x
  2. Step 2: Convert to fraction form
    215,379.63/323,217.07 = 75,138.26/x
  3. Step 3: Cross multiply
    215,379.63x = 323,217.07 × 75,138.26
  4. Step 4: Simplify right side
    215,379.63x = 24,285,967,664.20
  5. Step 5: Solve for x
    x = 24,285,967,664.20/215,379.63
  6. Step 6: Final answer
    x = 112,758.89

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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.