Finding the Fourth Proportional to 256,845.89, 354,447.75 and 142,129.36
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Solution
The fourth proportional to 256,845.89, 354,447.75 and 142,129.36 is: 196,138.75
Step by Step Solution
- Step 1: Write the proportion equation
256,845.89 : 354,447.75 = 142,129.36 : x - Step 2: Convert to fraction form
256,845.89/354,447.75 = 142,129.36/x - Step 3: Cross multiply
256,845.89x = 354,447.75 × 142,129.36 - Step 4: Simplify right side
256,845.89x = 50,377,431,040.62 - Step 5: Solve for x
x = 50,377,431,040.62/256,845.89 - Step 6: Final answer
x = 196,138.75
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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.