Finding the Fourth Proportional to 217,689.68, 326,660.63 and 91,318.64
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Solution
The fourth proportional to 217,689.68, 326,660.63 and 91,318.64 is: 137,030.85
Step by Step Solution
- Step 1: Write the proportion equation
217,689.68 : 326,660.63 = 91,318.64 : x - Step 2: Convert to fraction form
217,689.68/326,660.63 = 91,318.64/x - Step 3: Cross multiply
217,689.68x = 326,660.63 × 91,318.64 - Step 4: Simplify right side
217,689.68x = 29,830,202,383.25 - Step 5: Solve for x
x = 29,830,202,383.25/217,689.68 - Step 6: Final answer
x = 137,030.85
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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.