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Finding the Fourth Proportional to 279,335.57, 385,491.83 and 158,481.95

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Solution

The fourth proportional to 279,335.57, 385,491.83 and 158,481.95 is: 218,710.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,335.57 : 385,491.83 = 158,481.95 : x
  2. Step 2: Convert to fraction form
    279,335.57/385,491.83 = 158,481.95/x
  3. Step 3: Cross multiply
    279,335.57x = 385,491.83 × 158,481.95
  4. Step 4: Simplify right side
    279,335.57x = 61,093,494,207.60
  5. Step 5: Solve for x
    x = 61,093,494,207.60/279,335.57
  6. Step 6: Final answer
    x = 218,710.05

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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.