Finding the Fourth Proportional to 396,245.68, 546,817.20 and 214,957.72
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Solution
The fourth proportional to 396,245.68, 546,817.20 and 214,957.72 is: 296,640.66
Step by Step Solution
- Step 1: Write the proportion equation
396,245.68 : 546,817.20 = 214,957.72 : x - Step 2: Convert to fraction form
396,245.68/546,817.20 = 214,957.72/x - Step 3: Cross multiply
396,245.68x = 546,817.20 × 214,957.72 - Step 4: Simplify right side
396,245.68x = 117,542,578,568.78 - Step 5: Solve for x
x = 117,542,578,568.78/396,245.68 - Step 6: Final answer
x = 296,640.66
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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.