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Finding the Fourth Proportional to 318,877.26, 440,034 and 198,015.96

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Solution

The fourth proportional to 318,877.26, 440,034 and 198,015.96 is: 273,251.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,877.26 : 440,034 = 198,015.96 : x
  2. Step 2: Convert to fraction form
    318,877.26/440,034 = 198,015.96/x
  3. Step 3: Cross multiply
    318,877.26x = 440,034 × 198,015.96
  4. Step 4: Simplify right side
    318,877.26x = 87,133,754,942.64
  5. Step 5: Solve for x
    x = 87,133,754,942.64/318,877.26
  6. Step 6: Final answer
    x = 273,251.70

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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.