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Finding the Fourth Proportional to 384,843.32, 577,358.94 and 271,212.80

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Solution

The fourth proportional to 384,843.32, 577,358.94 and 271,212.80 is: 406,885.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,843.32 : 577,358.94 = 271,212.80 : x
  2. Step 2: Convert to fraction form
    384,843.32/577,358.94 = 271,212.80/x
  3. Step 3: Cross multiply
    384,843.32x = 577,358.94 × 271,212.80
  4. Step 4: Simplify right side
    384,843.32x = 156,587,134,722.43
  5. Step 5: Solve for x
    x = 156,587,134,722.43/384,843.32
  6. Step 6: Final answer
    x = 406,885.42

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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.