Finding the Fourth Proportional to 305,836.70, 421,884.53 and 284,187.23
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Solution
The fourth proportional to 305,836.70, 421,884.53 and 284,187.23 is: 392,020.29
Step by Step Solution
- Step 1: Write the proportion equation
305,836.70 : 421,884.53 = 284,187.23 : x - Step 2: Convert to fraction form
305,836.70/421,884.53 = 284,187.23/x - Step 3: Cross multiply
305,836.70x = 421,884.53 × 284,187.23 - Step 4: Simplify right side
305,836.70x = 119,894,192,430.19 - Step 5: Solve for x
x = 119,894,192,430.19/305,836.70 - Step 6: Final answer
x = 392,020.29
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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.