Finding the Fourth Proportional to 202,478.40, 303,717.60 and 155,239.20
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Solution
The fourth proportional to 202,478.40, 303,717.60 and 155,239.20 is: 232,858.80
Step by Step Solution
- Step 1: Write the proportion equation
202,478.40 : 303,717.60 = 155,239.20 : x - Step 2: Convert to fraction form
202,478.40/303,717.60 = 155,239.20/x - Step 3: Cross multiply
202,478.40x = 303,717.60 × 155,239.20 - Step 4: Simplify right side
202,478.40x = 47,148,877,249.92 - Step 5: Solve for x
x = 47,148,877,249.92/202,478.40 - Step 6: Final answer
x = 232,858.80
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Similar ratio
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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.