Finding the Fourth Proportional to 197,998.16, 273,217.19 and 121,520.43
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Solution
The fourth proportional to 197,998.16, 273,217.19 and 121,520.43 is: 167,685.75
Step by Step Solution
- Step 1: Write the proportion equation
197,998.16 : 273,217.19 = 121,520.43 : x - Step 2: Convert to fraction form
197,998.16/273,217.19 = 121,520.43/x - Step 3: Cross multiply
197,998.16x = 273,217.19 × 121,520.43 - Step 4: Simplify right side
197,998.16x = 33,201,469,804.59 - Step 5: Solve for x
x = 33,201,469,804.59/197,998.16 - Step 6: Final answer
x = 167,685.75
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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.