Finding the Fourth Proportional to 253,608.36, 349,979.76 and 140,428.68
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Solution
The fourth proportional to 253,608.36, 349,979.76 and 140,428.68 is: 193,791.70
Step by Step Solution
- Step 1: Write the proportion equation
253,608.36 : 349,979.76 = 140,428.68 : x - Step 2: Convert to fraction form
253,608.36/349,979.76 = 140,428.68/x - Step 3: Cross multiply
253,608.36x = 349,979.76 × 140,428.68 - Step 4: Simplify right side
253,608.36x = 49,147,195,723.52 - Step 5: Solve for x
x = 49,147,195,723.52/253,608.36 - Step 6: Final answer
x = 193,791.70
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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.