Finding the Fourth Proportional to 397,138.75, 548,057.03 and 215,850.63
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Solution
The fourth proportional to 397,138.75, 548,057.03 and 215,850.63 is: 297,876.88
Step by Step Solution
- Step 1: Write the proportion equation
397,138.75 : 548,057.03 = 215,850.63 : x - Step 2: Convert to fraction form
397,138.75/548,057.03 = 215,850.63/x - Step 3: Cross multiply
397,138.75x = 548,057.03 × 215,850.63 - Step 4: Simplify right side
397,138.75x = 118,298,453,831.29 - Step 5: Solve for x
x = 118,298,453,831.29/397,138.75 - Step 6: Final answer
x = 297,876.88
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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.