Finding the Fourth Proportional to 396,512.55, 547,172.69 and 215,220.65
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Solution
The fourth proportional to 396,512.55, 547,172.69 and 215,220.65 is: 296,996.55
Step by Step Solution
- Step 1: Write the proportion equation
396,512.55 : 547,172.69 = 215,220.65 : x - Step 2: Convert to fraction form
396,512.55/547,172.69 = 215,220.65/x - Step 3: Cross multiply
396,512.55x = 547,172.69 × 215,220.65 - Step 4: Simplify right side
396,512.55x = 117,762,858,192.08 - Step 5: Solve for x
x = 117,762,858,192.08/396,512.55 - Step 6: Final answer
x = 296,996.55
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.