Finding the Fourth Proportional to 397,189.75, 548,125.50 and 215,902.09
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Solution
The fourth proportional to 397,189.75, 548,125.50 and 215,902.09 is: 297,946.87
Step by Step Solution
- Step 1: Write the proportion equation
397,189.75 : 548,125.50 = 215,902.09 : x - Step 2: Convert to fraction form
397,189.75/548,125.50 = 215,902.09/x - Step 3: Cross multiply
397,189.75x = 548,125.50 × 215,902.09 - Step 4: Simplify right side
397,189.75x = 118,341,441,032.30 - Step 5: Solve for x
x = 118,341,441,032.30/397,189.75 - Step 6: Final answer
x = 297,946.87
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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.