Finding the Fourth Proportional to 213,812.09, 320,778.68 and 107,067.18
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Solution
The fourth proportional to 213,812.09, 320,778.68 and 107,067.18 is: 160,631.09
Step by Step Solution
- Step 1: Write the proportion equation
213,812.09 : 320,778.68 = 107,067.18 : x - Step 2: Convert to fraction form
213,812.09/320,778.68 = 107,067.18/x - Step 3: Cross multiply
213,812.09x = 320,778.68 × 107,067.18 - Step 4: Simplify right side
213,812.09x = 34,344,868,136.39 - Step 5: Solve for x
x = 34,344,868,136.39/213,812.09 - Step 6: Final answer
x = 160,631.09
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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.