Finding the Fourth Proportional to 212,188,028.70, 318,282,043.05 and 202,143,793.80
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Solution
The fourth proportional to 212,188,028.70, 318,282,043.05 and 202,143,793.80 is: 303,215,690.70
Step by Step Solution
- Step 1: Write the proportion equation
212,188,028.70 : 318,282,043.05 = 202,143,793.80 : x - Step 2: Convert to fraction form
212,188,028.70/318,282,043.05 = 202,143,793.80/x - Step 3: Cross multiply
212,188,028.70x = 318,282,043.05 × 202,143,793.80 - Step 4: Simplify right side
212,188,028.70x = 64,338,739,680,541,928 - Step 5: Solve for x
x = 64,338,739,680,541,928/212,188,028.70 - Step 6: Final answer
x = 303,215,690.70
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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.