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Finding the Fourth Proportional to 283,365.25, 391,044.06 and 156,040.54

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Solution

The fourth proportional to 283,365.25, 391,044.06 and 156,040.54 is: 215,335.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,365.25 : 391,044.06 = 156,040.54 : x
  2. Step 2: Convert to fraction form
    283,365.25/391,044.06 = 156,040.54/x
  3. Step 3: Cross multiply
    283,365.25x = 391,044.06 × 156,040.54
  4. Step 4: Simplify right side
    283,365.25x = 61,018,726,286.19
  5. Step 5: Solve for x
    x = 61,018,726,286.19/283,365.25
  6. Step 6: Final answer
    x = 215,335.95

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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.