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Finding the Fourth Proportional to 279,182.70, 385,240.05 and 158,299.92

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Solution

The fourth proportional to 279,182.70, 385,240.05 and 158,299.92 is: 218,435.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,182.70 : 385,240.05 = 158,299.92 : x
  2. Step 2: Convert to fraction form
    279,182.70/385,240.05 = 158,299.92/x
  3. Step 3: Cross multiply
    279,182.70x = 385,240.05 × 158,299.92
  4. Step 4: Simplify right side
    279,182.70x = 60,983,469,095.80
  5. Step 5: Solve for x
    x = 60,983,469,095.80/279,182.70
  6. Step 6: Final answer
    x = 218,435.70

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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.