Finding the Fourth Proportional to 212,756.87, 319,232.17 and 79,647.49
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Solution
The fourth proportional to 212,756.87, 319,232.17 and 79,647.49 is: 119,507.50
Step by Step Solution
- Step 1: Write the proportion equation
212,756.87 : 319,232.17 = 79,647.49 : x - Step 2: Convert to fraction form
212,756.87/319,232.17 = 79,647.49/x - Step 3: Cross multiply
212,756.87x = 319,232.17 × 79,647.49 - Step 4: Simplify right side
212,756.87x = 25,426,041,067.75 - Step 5: Solve for x
x = 25,426,041,067.75/212,756.87 - Step 6: Final answer
x = 119,507.50
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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.