Finding the Fourth Proportional to 212,416.62, 318,624.93 and 79,307.26
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Solution
The fourth proportional to 212,416.62, 318,624.93 and 79,307.26 is: 118,960.89
Step by Step Solution
- Step 1: Write the proportion equation
212,416.62 : 318,624.93 = 79,307.26 : x - Step 2: Convert to fraction form
212,416.62/318,624.93 = 79,307.26/x - Step 3: Cross multiply
212,416.62x = 318,624.93 × 79,307.26 - Step 4: Simplify right side
212,416.62x = 25,269,269,060.77 - Step 5: Solve for x
x = 25,269,269,060.77/212,416.62 - Step 6: Final answer
x = 118,960.89
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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.