Finding the Fourth Proportional to 218,431.77, 327,691.40 and 68,709.75
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Solution
The fourth proportional to 218,431.77, 327,691.40 and 68,709.75 is: 103,078.38
Step by Step Solution
- Step 1: Write the proportion equation
218,431.77 : 327,691.40 = 68,709.75 : x - Step 2: Convert to fraction form
218,431.77/327,691.40 = 68,709.75/x - Step 3: Cross multiply
218,431.77x = 327,691.40 × 68,709.75 - Step 4: Simplify right side
218,431.77x = 22,515,593,827.60 - Step 5: Solve for x
x = 22,515,593,827.60/218,431.77 - Step 6: Final answer
x = 103,078.38
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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.