Finding the Fourth Proportional to 207,865.80, 311,701.70 and 107,999.19
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Solution
The fourth proportional to 207,865.80, 311,701.70 and 107,999.19 is: 161,948.39
Step by Step Solution
- Step 1: Write the proportion equation
207,865.80 : 311,701.70 = 107,999.19 : x - Step 2: Convert to fraction form
207,865.80/311,701.70 = 107,999.19/x - Step 3: Cross multiply
207,865.80x = 311,701.70 × 107,999.19 - Step 4: Simplify right side
207,865.80x = 33,663,531,391.62 - Step 5: Solve for x
x = 33,663,531,391.62/207,865.80 - Step 6: Final answer
x = 161,948.39
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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.