Finding the Fourth Proportional to 212,458,278.05, 318,183,532.28 and 212,458,278.05
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Solution
The fourth proportional to 212,458,278.05, 318,183,532.28 and 212,458,278.05 is: 318,183,532.28
Step by Step Solution
- Step 1: Write the proportion equation
212,458,278.05 : 318,183,532.28 = 212,458,278.05 : x - Step 2: Convert to fraction form
212,458,278.05/318,183,532.28 = 212,458,278.05/x - Step 3: Cross multiply
212,458,278.05x = 318,183,532.28 × 212,458,278.05 - Step 4: Simplify right side
212,458,278.05x = 67,600,725,371,013,096 - Step 5: Solve for x
x = 67,600,725,371,013,096/212,458,278.05 - Step 6: Final answer
x = 318,183,532.28
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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.