Finding the Fourth Proportional to 207,615.80, 311,423.70 and 141,260.60
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Solution
The fourth proportional to 207,615.80, 311,423.70 and 141,260.60 is: 211,890.90
Step by Step Solution
- Step 1: Write the proportion equation
207,615.80 : 311,423.70 = 141,260.60 : x - Step 2: Convert to fraction form
207,615.80/311,423.70 = 141,260.60/x - Step 3: Cross multiply
207,615.80x = 311,423.70 × 141,260.60 - Step 4: Simplify right side
207,615.80x = 43,991,898,716.22 - Step 5: Solve for x
x = 43,991,898,716.22/207,615.80 - Step 6: Final answer
x = 211,890.90
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1.5x scale
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.