Finding the Fourth Proportional to 305,961.80, 422,236.68 and 185,125.28
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Solution
The fourth proportional to 305,961.80, 422,236.68 and 185,125.28 is: 255,478.57
Step by Step Solution
- Step 1: Write the proportion equation
305,961.80 : 422,236.68 = 185,125.28 : x - Step 2: Convert to fraction form
305,961.80/422,236.68 = 185,125.28/x - Step 3: Cross multiply
305,961.80x = 422,236.68 × 185,125.28 - Step 4: Simplify right side
305,961.80x = 78,166,683,611.27 - Step 5: Solve for x
x = 78,166,683,611.27/305,961.80 - Step 6: Final answer
x = 255,478.57
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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.