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Finding the Fourth Proportional to 250,721.60, 376,402.96 and 215,408.88

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Solution

The fourth proportional to 250,721.60, 376,402.96 and 215,408.88 is: 323,388.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,721.60 : 376,402.96 = 215,408.88 : x
  2. Step 2: Convert to fraction form
    250,721.60/376,402.96 = 215,408.88/x
  3. Step 3: Cross multiply
    250,721.60x = 376,402.96 × 215,408.88
  4. Step 4: Simplify right side
    250,721.60x = 81,080,540,042.28
  5. Step 5: Solve for x
    x = 81,080,540,042.28/250,721.60
  6. Step 6: Final answer
    x = 323,388.73

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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.