Finding the Fourth Proportional to 212,617.94, 318,816.18 and 79,388.63
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Solution
The fourth proportional to 212,617.94, 318,816.18 and 79,388.63 is: 119,041.60
Step by Step Solution
- Step 1: Write the proportion equation
212,617.94 : 318,816.18 = 79,388.63 : x - Step 2: Convert to fraction form
212,617.94/318,816.18 = 79,388.63/x - Step 3: Cross multiply
212,617.94x = 318,816.18 × 79,388.63 - Step 4: Simplify right side
212,617.94x = 25,310,379,752.03 - Step 5: Solve for x
x = 25,310,379,752.03/212,617.94 - Step 6: Final answer
x = 119,041.60
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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.