Finding the Fourth Proportional to 203,958.81, 305,678.61 and 115,261.79
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Solution
The fourth proportional to 203,958.81, 305,678.61 and 115,261.79 is: 172,745.97
Step by Step Solution
- Step 1: Write the proportion equation
203,958.81 : 305,678.61 = 115,261.79 : x - Step 2: Convert to fraction form
203,958.81/305,678.61 = 115,261.79/x - Step 3: Cross multiply
203,958.81x = 305,678.61 × 115,261.79 - Step 4: Simplify right side
203,958.81x = 35,233,062,224.92 - Step 5: Solve for x
x = 35,233,062,224.92/203,958.81 - Step 6: Final answer
x = 172,745.97
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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.