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Finding the Fourth Proportional to 215,843.92, 323,640.48 and 66,041.44

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Solution

The fourth proportional to 215,843.92, 323,640.48 and 66,041.44 is: 99,023.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,843.92 : 323,640.48 = 66,041.44 : x
  2. Step 2: Convert to fraction form
    215,843.92/323,640.48 = 66,041.44/x
  3. Step 3: Cross multiply
    215,843.92x = 323,640.48 × 66,041.44
  4. Step 4: Simplify right side
    215,843.92x = 21,373,683,341.49
  5. Step 5: Solve for x
    x = 21,373,683,341.49/215,843.92
  6. Step 6: Final answer
    x = 99,023.79

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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.