Finding the Fourth Proportional to 235,861.96, 325,493.40 and 128,434.09
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Solution
The fourth proportional to 235,861.96, 325,493.40 and 128,434.09 is: 177,241.17
Step by Step Solution
- Step 1: Write the proportion equation
235,861.96 : 325,493.40 = 128,434.09 : x - Step 2: Convert to fraction form
235,861.96/325,493.40 = 128,434.09/x - Step 3: Cross multiply
235,861.96x = 325,493.40 × 128,434.09 - Step 4: Simplify right side
235,861.96x = 41,804,448,630.01 - Step 5: Solve for x
x = 41,804,448,630.01/235,861.96 - Step 6: Final answer
x = 177,241.17
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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.