Finding the Fourth Proportional to 212,311.84, 318,459.50 and 79,191.84
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Solution
The fourth proportional to 212,311.84, 318,459.50 and 79,191.84 is: 118,784.68
Step by Step Solution
- Step 1: Write the proportion equation
212,311.84 : 318,459.50 = 79,191.84 : x - Step 2: Convert to fraction form
212,311.84/318,459.50 = 79,191.84/x - Step 3: Cross multiply
212,311.84x = 318,459.50 × 79,191.84 - Step 4: Simplify right side
212,311.84x = 25,219,393,770.48 - Step 5: Solve for x
x = 25,219,393,770.48/212,311.84 - Step 6: Final answer
x = 118,784.68
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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.