Finding the Fourth Proportional to 639,238.20, 958,183.27 and 212,660.10
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Solution
The fourth proportional to 639,238.20, 958,183.27 and 212,660.10 is: 318,765.92
Step by Step Solution
- Step 1: Write the proportion equation
639,238.20 : 958,183.27 = 212,660.10 : x - Step 2: Convert to fraction form
639,238.20/958,183.27 = 212,660.10/x - Step 3: Cross multiply
639,238.20x = 958,183.27 × 212,660.10 - Step 4: Simplify right side
639,238.20x = 203,767,350,016.53 - Step 5: Solve for x
x = 203,767,350,016.53/639,238.20 - Step 6: Final answer
x = 318,765.92
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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.