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Finding the Fourth Proportional to 283,404.78, 391,092.71 and 154,344.66

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Solution

The fourth proportional to 283,404.78, 391,092.71 and 154,344.66 is: 212,992.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,404.78 : 391,092.71 = 154,344.66 : x
  2. Step 2: Convert to fraction form
    283,404.78/391,092.71 = 154,344.66/x
  3. Step 3: Cross multiply
    283,404.78x = 391,092.71 × 154,344.66
  4. Step 4: Simplify right side
    283,404.78x = 60,363,070,581.71
  5. Step 5: Solve for x
    x = 60,363,070,581.71/283,404.78
  6. Step 6: Final answer
    x = 212,992.42

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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.