Finding the Fourth Proportional to 397,188.42, 548,122.97 and 215,899.84
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Solution
The fourth proportional to 397,188.42, 548,122.97 and 215,899.84 is: 297,943.39
Step by Step Solution
- Step 1: Write the proportion equation
397,188.42 : 548,122.97 = 215,899.84 : x - Step 2: Convert to fraction form
397,188.42/548,122.97 = 215,899.84/x - Step 3: Cross multiply
397,188.42x = 548,122.97 × 215,899.84 - Step 4: Simplify right side
397,188.42x = 118,339,662,760.00 - Step 5: Solve for x
x = 118,339,662,760.00/397,188.42 - Step 6: Final answer
x = 297,943.39
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1.5x scale
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.