Finding the Fourth Proportional to 256,208.99, 353,662.76 and 154,239.20
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Solution
The fourth proportional to 256,208.99, 353,662.76 and 154,239.20 is: 212,906.89
Step by Step Solution
- Step 1: Write the proportion equation
256,208.99 : 353,662.76 = 154,239.20 : x - Step 2: Convert to fraction form
256,208.99/353,662.76 = 154,239.20/x - Step 3: Cross multiply
256,208.99x = 353,662.76 × 154,239.20 - Step 4: Simplify right side
256,208.99x = 54,548,659,789.48 - Step 5: Solve for x
x = 54,548,659,789.48/256,208.99 - Step 6: Final answer
x = 212,906.89
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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.