Finding the Fourth Proportional to 202,579.40, 303,431.70 and 131,720.60
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Solution
The fourth proportional to 202,579.40, 303,431.70 and 131,720.60 is: 197,296.50
Step by Step Solution
- Step 1: Write the proportion equation
202,579.40 : 303,431.70 = 131,720.60 : x - Step 2: Convert to fraction form
202,579.40/303,431.70 = 131,720.60/x - Step 3: Cross multiply
202,579.40x = 303,431.70 × 131,720.60 - Step 4: Simplify right side
202,579.40x = 39,968,205,583.02 - Step 5: Solve for x
x = 39,968,205,583.02/202,579.40 - Step 6: Final answer
x = 197,296.50
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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.