Finding the Fourth Proportional to 393,869.96, 543,537.78 and 215,021.96
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Solution
The fourth proportional to 393,869.96, 543,537.78 and 215,021.96 is: 296,728.80
Step by Step Solution
- Step 1: Write the proportion equation
393,869.96 : 543,537.78 = 215,021.96 : x - Step 2: Convert to fraction form
393,869.96/543,537.78 = 215,021.96/x - Step 3: Cross multiply
393,869.96x = 543,537.78 × 215,021.96 - Step 4: Simplify right side
393,869.96x = 116,872,558,789.65 - Step 5: Solve for x
x = 116,872,558,789.65/393,869.96 - Step 6: Final answer
x = 296,728.80
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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.