Finding the Fourth Proportional to 394,129.11, 543,737.16 and 291,010.44
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Solution
The fourth proportional to 394,129.11, 543,737.16 and 291,010.44 is: 401,475.52
Step by Step Solution
- Step 1: Write the proportion equation
394,129.11 : 543,737.16 = 291,010.44 : x - Step 2: Convert to fraction form
394,129.11/543,737.16 = 291,010.44/x - Step 3: Cross multiply
394,129.11x = 543,737.16 × 291,010.44 - Step 4: Simplify right side
394,129.11x = 158,233,190,175.95 - Step 5: Solve for x
x = 158,233,190,175.95/394,129.11 - Step 6: Final answer
x = 401,475.52
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1.5x scale
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.