Finding the Fourth Proportional to 256,442.81, 353,872.55 and 141,720.08
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Solution
The fourth proportional to 256,442.81, 353,872.55 and 141,720.08 is: 195,563.47
Step by Step Solution
- Step 1: Write the proportion equation
256,442.81 : 353,872.55 = 141,720.08 : x - Step 2: Convert to fraction form
256,442.81/353,872.55 = 141,720.08/x - Step 3: Cross multiply
256,442.81x = 353,872.55 × 141,720.08 - Step 4: Simplify right side
256,442.81x = 50,150,845,387.20 - Step 5: Solve for x
x = 50,150,845,387.20/256,442.81 - Step 6: Final answer
x = 195,563.47
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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.