Finding the Fourth Proportional to 285,153.75, 428,284.22 and 209,976.99
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Solution
The fourth proportional to 285,153.75, 428,284.22 and 209,976.99 is: 315,373.13
Step by Step Solution
- Step 1: Write the proportion equation
285,153.75 : 428,284.22 = 209,976.99 : x - Step 2: Convert to fraction form
285,153.75/428,284.22 = 209,976.99/x - Step 3: Cross multiply
285,153.75x = 428,284.22 × 209,976.99 - Step 4: Simplify right side
285,153.75x = 89,929,830,330.21 - Step 5: Solve for x
x = 89,929,830,330.21/285,153.75 - Step 6: Final answer
x = 315,373.13
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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.