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Finding the Fourth Proportional to 491,991.33, 738,090.56 and 278,861.37

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Solution

The fourth proportional to 491,991.33, 738,090.56 and 278,861.37 is: 418,350.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,991.33 : 738,090.56 = 278,861.37 : x
  2. Step 2: Convert to fraction form
    491,991.33/738,090.56 = 278,861.37/x
  3. Step 3: Cross multiply
    491,991.33x = 738,090.56 × 278,861.37
  4. Step 4: Simplify right side
    491,991.33x = 205,824,942,674.98
  5. Step 5: Solve for x
    x = 205,824,942,674.98/491,991.33
  6. Step 6: Final answer
    x = 418,350.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.