Finding the Fourth Proportional to 284,691.21, 392,861.90 and 163,836.68
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Solution
The fourth proportional to 284,691.21, 392,861.90 and 163,836.68 is: 226,087.72
Step by Step Solution
- Step 1: Write the proportion equation
284,691.21 : 392,861.90 = 163,836.68 : x - Step 2: Convert to fraction form
284,691.21/392,861.90 = 163,836.68/x - Step 3: Cross multiply
284,691.21x = 392,861.90 × 163,836.68 - Step 4: Simplify right side
284,691.21x = 64,365,186,918.19 - Step 5: Solve for x
x = 64,365,186,918.19/284,691.21 - Step 6: Final answer
x = 226,087.72
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1.5x scale
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.