Finding the Fourth Proportional to 311,912.36, 430,439.10 and 168,672.44
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Solution
The fourth proportional to 311,912.36, 430,439.10 and 168,672.44 is: 232,767.99
Step by Step Solution
- Step 1: Write the proportion equation
311,912.36 : 430,439.10 = 168,672.44 : x - Step 2: Convert to fraction form
311,912.36/430,439.10 = 168,672.44/x - Step 3: Cross multiply
311,912.36x = 430,439.10 × 168,672.44 - Step 4: Simplify right side
311,912.36x = 72,603,213,268.40 - Step 5: Solve for x
x = 72,603,213,268.40/311,912.36 - Step 6: Final answer
x = 232,767.99
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.