Finding the Fourth Proportional to 239,516.26, 359,378.07 and 128,578.66
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Solution
The fourth proportional to 239,516.26, 359,378.07 and 128,578.66 is: 192,923.65
Step by Step Solution
- Step 1: Write the proportion equation
239,516.26 : 359,378.07 = 128,578.66 : x - Step 2: Convert to fraction form
239,516.26/359,378.07 = 128,578.66/x - Step 3: Cross multiply
239,516.26x = 359,378.07 × 128,578.66 - Step 4: Simplify right side
239,516.26x = 46,208,350,673.99 - Step 5: Solve for x
x = 46,208,350,673.99/239,516.26 - Step 6: Final answer
x = 192,923.65
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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.