Finding the Fourth Proportional to 328,163.40, 492,245.10 and 91,505.70
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Solution
The fourth proportional to 328,163.40, 492,245.10 and 91,505.70 is: 137,258.55
Step by Step Solution
- Step 1: Write the proportion equation
328,163.40 : 492,245.10 = 91,505.70 : x - Step 2: Convert to fraction form
328,163.40/492,245.10 = 91,505.70/x - Step 3: Cross multiply
328,163.40x = 492,245.10 × 91,505.70 - Step 4: Simplify right side
328,163.40x = 45,043,232,447.07 - Step 5: Solve for x
x = 45,043,232,447.07/328,163.40 - Step 6: Final answer
x = 137,258.55
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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.