Finding the Fourth Proportional to 201,939.28, 278,664.84 and 111,294.96
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Solution
The fourth proportional to 201,939.28, 278,664.84 and 111,294.96 is: 153,580.78
Step by Step Solution
- Step 1: Write the proportion equation
201,939.28 : 278,664.84 = 111,294.96 : x - Step 2: Convert to fraction form
201,939.28/278,664.84 = 111,294.96/x - Step 3: Cross multiply
201,939.28x = 278,664.84 × 111,294.96 - Step 4: Simplify right side
201,939.28x = 31,013,992,221.21 - Step 5: Solve for x
x = 31,013,992,221.21/201,939.28 - Step 6: Final answer
x = 153,580.78
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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.