Finding the Fourth Proportional to 201,785.51, 278,456.37 and 121,257.44
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Solution
The fourth proportional to 201,785.51, 278,456.37 and 121,257.44 is: 167,330.68
Step by Step Solution
- Step 1: Write the proportion equation
201,785.51 : 278,456.37 = 121,257.44 : x - Step 2: Convert to fraction form
201,785.51/278,456.37 = 121,257.44/x - Step 3: Cross multiply
201,785.51x = 278,456.37 × 121,257.44 - Step 4: Simplify right side
201,785.51x = 33,764,905,185.61 - Step 5: Solve for x
x = 33,764,905,185.61/201,785.51 - Step 6: Final answer
x = 167,330.68
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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.