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Finding the Fourth Proportional to 328,229.87, 492,427.83 and 91,572.37

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Solution

The fourth proportional to 328,229.87, 492,427.83 and 91,572.37 is: 137,381.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,229.87 : 492,427.83 = 91,572.37 : x
  2. Step 2: Convert to fraction form
    328,229.87/492,427.83 = 91,572.37/x
  3. Step 3: Cross multiply
    328,229.87x = 492,427.83 × 91,572.37
  4. Step 4: Simplify right side
    328,229.87x = 45,092,780,984.92
  5. Step 5: Solve for x
    x = 45,092,780,984.92/328,229.87
  6. Step 6: Final answer
    x = 137,381.71

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1.5x scale

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.