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Finding the Fourth Proportional to 328,230.87, 492,429.33 and 91,573.37

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Solution

The fourth proportional to 328,230.87, 492,429.33 and 91,573.37 is: 137,383.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,230.87 : 492,429.33 = 91,573.37 : x
  2. Step 2: Convert to fraction form
    328,230.87/492,429.33 = 91,573.37/x
  3. Step 3: Cross multiply
    328,230.87x = 492,429.33 × 91,573.37
  4. Step 4: Simplify right side
    328,230.87x = 45,093,413,234.94
  5. Step 5: Solve for x
    x = 45,093,413,234.94/328,230.87
  6. Step 6: Final answer
    x = 137,383.22

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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.