Finding the Fourth Proportional to 305,768.71, 422,160.66 and 198,644.05
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Solution
The fourth proportional to 305,768.71, 422,160.66 and 198,644.05 is: 274,258.62
Step by Step Solution
- Step 1: Write the proportion equation
305,768.71 : 422,160.66 = 198,644.05 : x - Step 2: Convert to fraction form
305,768.71/422,160.66 = 198,644.05/x - Step 3: Cross multiply
305,768.71x = 422,160.66 × 198,644.05 - Step 4: Simplify right side
305,768.71x = 83,859,703,253.07 - Step 5: Solve for x
x = 83,859,703,253.07/305,768.71 - Step 6: Final answer
x = 274,258.62
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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.