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Finding the Fourth Proportional to 323,891.88, 447,153.78 and 215,182.80

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Solution

The fourth proportional to 323,891.88, 447,153.78 and 215,182.80 is: 297,073.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,891.88 : 447,153.78 = 215,182.80 : x
  2. Step 2: Convert to fraction form
    323,891.88/447,153.78 = 215,182.80/x
  3. Step 3: Cross multiply
    323,891.88x = 447,153.78 × 215,182.80
  4. Step 4: Simplify right side
    323,891.88x = 96,219,802,410.98
  5. Step 5: Solve for x
    x = 96,219,802,410.98/323,891.88
  6. Step 6: Final answer
    x = 297,073.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.