Finding the Fourth Proportional to 217,690.76, 326,474.30 and 84,542.60
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Solution
The fourth proportional to 217,690.76, 326,474.30 and 84,542.60 is: 126,789.88
Step by Step Solution
- Step 1: Write the proportion equation
217,690.76 : 326,474.30 = 84,542.60 : x - Step 2: Convert to fraction form
217,690.76/326,474.30 = 84,542.60/x - Step 3: Cross multiply
217,690.76x = 326,474.30 × 84,542.60 - Step 4: Simplify right side
217,690.76x = 27,600,986,155.18 - Step 5: Solve for x
x = 27,600,986,155.18/217,690.76 - Step 6: Final answer
x = 126,789.88
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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.