Finding the Fourth Proportional to 213,021.96, 319,489.20 and 100,654.44
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Solution
The fourth proportional to 213,021.96, 319,489.20 and 100,654.44 is: 150,960.99
Step by Step Solution
- Step 1: Write the proportion equation
213,021.96 : 319,489.20 = 100,654.44 : x - Step 2: Convert to fraction form
213,021.96/319,489.20 = 100,654.44/x - Step 3: Cross multiply
213,021.96x = 319,489.20 × 100,654.44 - Step 4: Simplify right side
213,021.96x = 32,158,006,512.05 - Step 5: Solve for x
x = 32,158,006,512.05/213,021.96 - Step 6: Final answer
x = 150,960.99
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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.