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Finding the Fourth Proportional to 328,517.37, 492,776.87 and 91,859.67

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Solution

The fourth proportional to 328,517.37, 492,776.87 and 91,859.67 is: 137,789.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,517.37 : 492,776.87 = 91,859.67 : x
  2. Step 2: Convert to fraction form
    328,517.37/492,776.87 = 91,859.67/x
  3. Step 3: Cross multiply
    328,517.37x = 492,776.87 × 91,859.67
  4. Step 4: Simplify right side
    328,517.37x = 45,266,320,202.53
  5. Step 5: Solve for x
    x = 45,266,320,202.53/328,517.37
  6. Step 6: Final answer
    x = 137,789.73

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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.