Finding the Fourth Proportional to 212,616.36, 318,813.84 and 79,387.08
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Solution
The fourth proportional to 212,616.36, 318,813.84 and 79,387.08 is: 119,039.29
Step by Step Solution
- Step 1: Write the proportion equation
212,616.36 : 318,813.84 = 79,387.08 : x - Step 2: Convert to fraction form
212,616.36/318,813.84 = 79,387.08/x - Step 3: Cross multiply
212,616.36x = 318,813.84 × 79,387.08 - Step 4: Simplify right side
212,616.36x = 25,309,699,821.19 - Step 5: Solve for x
x = 25,309,699,821.19/212,616.36 - Step 6: Final answer
x = 119,039.29
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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.