Finding the Fourth Proportional to 212,735.20, 318,446.70 and 189,115.60
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Solution
The fourth proportional to 212,735.20, 318,446.70 and 189,115.60 is: 283,090.15
Step by Step Solution
- Step 1: Write the proportion equation
212,735.20 : 318,446.70 = 189,115.60 : x - Step 2: Convert to fraction form
212,735.20/318,446.70 = 189,115.60/x - Step 3: Cross multiply
212,735.20x = 318,446.70 × 189,115.60 - Step 4: Simplify right side
212,735.20x = 60,223,238,738.52 - Step 5: Solve for x
x = 60,223,238,738.52/212,735.20 - Step 6: Final answer
x = 283,090.15
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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.