Finding the Fourth Proportional to 821,490.80, 1,232,236.20 and 230,514.80
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Solution
The fourth proportional to 821,490.80, 1,232,236.20 and 230,514.80 is: 345,772.20
Step by Step Solution
- Step 1: Write the proportion equation
821,490.80 : 1,232,236.20 = 230,514.80 : x - Step 2: Convert to fraction form
821,490.80/1,232,236.20 = 230,514.80/x - Step 3: Cross multiply
821,490.80x = 1,232,236.20 × 230,514.80 - Step 4: Simplify right side
821,490.80x = 284,048,681,195.76 - Step 5: Solve for x
x = 284,048,681,195.76/821,490.80 - Step 6: Final answer
x = 345,772.20
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Similar ratio
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.