Finding the Fourth Proportional to 212,293.26, 318,341.49 and 79,137.78
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Solution
The fourth proportional to 212,293.26, 318,341.49 and 79,137.78 is: 118,669.99
Step by Step Solution
- Step 1: Write the proportion equation
212,293.26 : 318,341.49 = 79,137.78 : x - Step 2: Convert to fraction form
212,293.26/318,341.49 = 79,137.78/x - Step 3: Cross multiply
212,293.26x = 318,341.49 × 79,137.78 - Step 4: Simplify right side
212,293.26x = 25,192,838,800.49 - Step 5: Solve for x
x = 25,192,838,800.49/212,293.26 - Step 6: Final answer
x = 118,669.99
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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.