Finding the Fourth Proportional to 305,787.18, 422,000.34 and 169,821.75
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Solution
The fourth proportional to 305,787.18, 422,000.34 and 169,821.75 is: 234,361.81
Step by Step Solution
- Step 1: Write the proportion equation
305,787.18 : 422,000.34 = 169,821.75 : x - Step 2: Convert to fraction form
305,787.18/422,000.34 = 169,821.75/x - Step 3: Cross multiply
305,787.18x = 422,000.34 × 169,821.75 - Step 4: Simplify right side
305,787.18x = 71,664,836,239.40 - Step 5: Solve for x
x = 71,664,836,239.40/305,787.18 - Step 6: Final answer
x = 234,361.81
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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.