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Finding the Fourth Proportional to 215,843.15, 323,580.12 and 82,818.88

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Solution

The fourth proportional to 215,843.15, 323,580.12 and 82,818.88 is: 124,157.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,843.15 : 323,580.12 = 82,818.88 : x
  2. Step 2: Convert to fraction form
    215,843.15/323,580.12 = 82,818.88/x
  3. Step 3: Cross multiply
    215,843.15x = 323,580.12 × 82,818.88
  4. Step 4: Simplify right side
    215,843.15x = 26,798,543,128.67
  5. Step 5: Solve for x
    x = 26,798,543,128.67/215,843.15
  6. Step 6: Final answer
    x = 124,157.49

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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.