Finding the Fourth Proportional to 256,949.97, 385,268.88 and 128,717.12
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Solution
The fourth proportional to 256,949.97, 385,268.88 and 128,717.12 is: 192,997.50
Step by Step Solution
- Step 1: Write the proportion equation
256,949.97 : 385,268.88 = 128,717.12 : x - Step 2: Convert to fraction form
256,949.97/385,268.88 = 128,717.12/x - Step 3: Cross multiply
256,949.97x = 385,268.88 × 128,717.12 - Step 4: Simplify right side
256,949.97x = 49,590,701,200.67 - Step 5: Solve for x
x = 49,590,701,200.67/256,949.97 - Step 6: Final answer
x = 192,997.50
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1.5x scale
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.