Finding the Fourth Proportional to 216,982.20, 325,235.70 and 76,668.60
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Solution
The fourth proportional to 216,982.20, 325,235.70 and 76,668.60 is: 114,918.95
Step by Step Solution
- Step 1: Write the proportion equation
216,982.20 : 325,235.70 = 76,668.60 : x - Step 2: Convert to fraction form
216,982.20/325,235.70 = 76,668.60/x - Step 3: Cross multiply
216,982.20x = 325,235.70 × 76,668.60 - Step 4: Simplify right side
216,982.20x = 24,935,365,789.02 - Step 5: Solve for x
x = 24,935,365,789.02/216,982.20 - Step 6: Final answer
x = 114,918.95
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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.