Finding the Fourth Proportional to 548,108.20, 756,393.42 and 306,400.60
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Solution
The fourth proportional to 548,108.20, 756,393.42 and 306,400.60 is: 422,835.12
Step by Step Solution
- Step 1: Write the proportion equation
548,108.20 : 756,393.42 = 306,400.60 : x - Step 2: Convert to fraction form
548,108.20/756,393.42 = 306,400.60/x - Step 3: Cross multiply
548,108.20x = 756,393.42 × 306,400.60 - Step 4: Simplify right side
548,108.20x = 231,759,397,724.05 - Step 5: Solve for x
x = 231,759,397,724.05/548,108.20 - Step 6: Final answer
x = 422,835.12
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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.