Finding the Fourth Proportional to 388,076.99, 582,212.34 and 135,361.09
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Solution
The fourth proportional to 388,076.99, 582,212.34 and 135,361.09 is: 203,075.41
Step by Step Solution
- Step 1: Write the proportion equation
388,076.99 : 582,212.34 = 135,361.09 : x - Step 2: Convert to fraction form
388,076.99/582,212.34 = 135,361.09/x - Step 3: Cross multiply
388,076.99x = 582,212.34 × 135,361.09 - Step 4: Simplify right side
388,076.99x = 78,808,895,498.32 - Step 5: Solve for x
x = 78,808,895,498.32/388,076.99 - Step 6: Final answer
x = 203,075.41
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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.