Finding the Fourth Proportional to 664,803.40, 997,213.20 and 215,520.70
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Solution
The fourth proportional to 664,803.40, 997,213.20 and 215,520.70 is: 323,283.68
Step by Step Solution
- Step 1: Write the proportion equation
664,803.40 : 997,213.20 = 215,520.70 : x - Step 2: Convert to fraction form
664,803.40/997,213.20 = 215,520.70/x - Step 3: Cross multiply
664,803.40x = 997,213.20 × 215,520.70 - Step 4: Simplify right side
664,803.40x = 214,920,086,913.24 - Step 5: Solve for x
x = 214,920,086,913.24/664,803.40 - Step 6: Final answer
x = 323,283.68
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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.