Finding the Fourth Proportional to 256,611,379.26, 384,920,217.76 and 169,729,042.62
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Solution
The fourth proportional to 256,611,379.26, 384,920,217.76 and 169,729,042.62 is: 254,595,646.67
Step by Step Solution
- Step 1: Write the proportion equation
256,611,379.26 : 384,920,217.76 = 169,729,042.62 : x - Step 2: Convert to fraction form
256,611,379.26/384,920,217.76 = 169,729,042.62/x - Step 3: Cross multiply
256,611,379.26x = 384,920,217.76 × 169,729,042.62 - Step 4: Simplify right side
256,611,379.26x = 65,332,140,045,486,720 - Step 5: Solve for x
x = 65,332,140,045,486,720/256,611,379.26 - Step 6: Final answer
x = 254,595,646.67
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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.