Finding the Fourth Proportional to 305,979,922.20, 422,239,979.34 and 166,747,677.60
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Solution
The fourth proportional to 305,979,922.20, 422,239,979.34 and 166,747,677.60 is: 230,105,084.80
Step by Step Solution
- Step 1: Write the proportion equation
305,979,922.20 : 422,239,979.34 = 166,747,677.60 : x - Step 2: Convert to fraction form
305,979,922.20/422,239,979.34 = 166,747,677.60/x - Step 3: Cross multiply
305,979,922.20x = 422,239,979.34 × 166,747,677.60 - Step 4: Simplify right side
305,979,922.20x = 70,407,535,944,816,976 - Step 5: Solve for x
x = 70,407,535,944,816,976/305,979,922.20 - Step 6: Final answer
x = 230,105,084.80
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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.