Finding the Fourth Proportional to 388,267.98, 582,571.56 and 135,729.78
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Solution
The fourth proportional to 388,267.98, 582,571.56 and 135,729.78 is: 203,653.95
Step by Step Solution
- Step 1: Write the proportion equation
388,267.98 : 582,571.56 = 135,729.78 : x - Step 2: Convert to fraction form
388,267.98/582,571.56 = 135,729.78/x - Step 3: Cross multiply
388,267.98x = 582,571.56 × 135,729.78 - Step 4: Simplify right side
388,267.98x = 79,072,309,673.06 - Step 5: Solve for x
x = 79,072,309,673.06/388,267.98 - Step 6: Final answer
x = 203,653.95
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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.