Finding the Fourth Proportional to 213,431.81, 320,589.99 and 169,368.62
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Solution
The fourth proportional to 213,431.81, 320,589.99 and 169,368.62 is: 254,403.90
Step by Step Solution
- Step 1: Write the proportion equation
213,431.81 : 320,589.99 = 169,368.62 : x - Step 2: Convert to fraction form
213,431.81/320,589.99 = 169,368.62/x - Step 3: Cross multiply
213,431.81x = 320,589.99 × 169,368.62 - Step 4: Simplify right side
213,431.81x = 54,297,882,589.16 - Step 5: Solve for x
x = 54,297,882,589.16/213,431.81 - Step 6: Final answer
x = 254,403.90
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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.