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Finding the Fourth Proportional to 215,473.92, 323,186.16 and 82,351.22

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Solution

The fourth proportional to 215,473.92, 323,186.16 and 82,351.22 is: 123,517.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,473.92 : 323,186.16 = 82,351.22 : x
  2. Step 2: Convert to fraction form
    215,473.92/323,186.16 = 82,351.22/x
  3. Step 3: Cross multiply
    215,473.92x = 323,186.16 × 82,351.22
  4. Step 4: Simplify right side
    215,473.92x = 26,614,774,563.12
  5. Step 5: Solve for x
    x = 26,614,774,563.12/215,473.92
  6. Step 6: Final answer
    x = 123,517.38

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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.