Finding the Fourth Proportional to 252,131.09, 378,275.94 and 74,639.66
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Solution
The fourth proportional to 252,131.09, 378,275.94 and 74,639.66 is: 111,982.96
Step by Step Solution
- Step 1: Write the proportion equation
252,131.09 : 378,275.94 = 74,639.66 : x - Step 2: Convert to fraction form
252,131.09/378,275.94 = 74,639.66/x - Step 3: Cross multiply
252,131.09x = 378,275.94 × 74,639.66 - Step 4: Simplify right side
252,131.09x = 28,234,385,656.40 - Step 5: Solve for x
x = 28,234,385,656.40/252,131.09 - Step 6: Final answer
x = 111,982.96
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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.