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Finding the Fourth Proportional to 263,381.76, 363,472.38 and 155,912.58

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Solution

The fourth proportional to 263,381.76, 363,472.38 and 155,912.58 is: 215,162.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    263,381.76 : 363,472.38 = 155,912.58 : x
  2. Step 2: Convert to fraction form
    263,381.76/363,472.38 = 155,912.58/x
  3. Step 3: Cross multiply
    263,381.76x = 363,472.38 × 155,912.58
  4. Step 4: Simplify right side
    263,381.76x = 56,669,916,524.54
  5. Step 5: Solve for x
    x = 56,669,916,524.54/263,381.76
  6. Step 6: Final answer
    x = 215,162.65

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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.