Finding the Fourth Proportional to 202,439.20, 303,658.80 and 91,631.20
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Solution
The fourth proportional to 202,439.20, 303,658.80 and 91,631.20 is: 137,446.80
Step by Step Solution
- Step 1: Write the proportion equation
202,439.20 : 303,658.80 = 91,631.20 : x - Step 2: Convert to fraction form
202,439.20/303,658.80 = 91,631.20/x - Step 3: Cross multiply
202,439.20x = 303,658.80 × 91,631.20 - Step 4: Simplify right side
202,439.20x = 27,824,620,234.56 - Step 5: Solve for x
x = 27,824,620,234.56/202,439.20 - Step 6: Final answer
x = 137,446.80
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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.