Finding the Fourth Proportional to 204,961.79, 306,812.11 and 133,731.05
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Solution
The fourth proportional to 204,961.79, 306,812.11 and 133,731.05 is: 200,185.15
Step by Step Solution
- Step 1: Write the proportion equation
204,961.79 : 306,812.11 = 133,731.05 : x - Step 2: Convert to fraction form
204,961.79/306,812.11 = 133,731.05/x - Step 3: Cross multiply
204,961.79x = 306,812.11 × 133,731.05 - Step 4: Simplify right side
204,961.79x = 41,030,305,742.22 - Step 5: Solve for x
x = 41,030,305,742.22/204,961.79 - Step 6: Final answer
x = 200,185.15
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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.