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Finding the Fourth Proportional to 331,305.96, 499,171.89 and 299,756.46

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Solution

The fourth proportional to 331,305.96, 499,171.89 and 299,756.46 is: 451,636.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,305.96 : 499,171.89 = 299,756.46 : x
  2. Step 2: Convert to fraction form
    331,305.96/499,171.89 = 299,756.46/x
  3. Step 3: Cross multiply
    331,305.96x = 499,171.89 × 299,756.46
  4. Step 4: Simplify right side
    331,305.96x = 149,629,998,677.91
  5. Step 5: Solve for x
    x = 149,629,998,677.91/331,305.96
  6. Step 6: Final answer
    x = 451,636.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.