Finding the Fourth Proportional to 388,163.81, 582,319.26 and 135,516.44
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Solution
The fourth proportional to 388,163.81, 582,319.26 and 135,516.44 is: 203,300.34
Step by Step Solution
- Step 1: Write the proportion equation
388,163.81 : 582,319.26 = 135,516.44 : x - Step 2: Convert to fraction form
388,163.81/582,319.26 = 135,516.44/x - Step 3: Cross multiply
388,163.81x = 582,319.26 × 135,516.44 - Step 4: Simplify right side
388,163.81x = 78,913,834,514.43 - Step 5: Solve for x
x = 78,913,834,514.43/388,163.81 - Step 6: Final answer
x = 203,300.34
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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.