Finding the Fourth Proportional to 212,581,455.40, 318,872,183.10 and 161,185,205.80
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Solution
The fourth proportional to 212,581,455.40, 318,872,183.10 and 161,185,205.80 is: 241,777,808.70
Step by Step Solution
- Step 1: Write the proportion equation
212,581,455.40 : 318,872,183.10 = 161,185,205.80 : x - Step 2: Convert to fraction form
212,581,455.40/318,872,183.10 = 161,185,205.80/x - Step 3: Cross multiply
212,581,455.40x = 318,872,183.10 × 161,185,205.80 - Step 4: Simplify right side
212,581,455.40x = 51,397,478,456,868,792 - Step 5: Solve for x
x = 51,397,478,456,868,792/212,581,455.40 - Step 6: Final answer
x = 241,777,808.70
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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.