Finding the Fourth Proportional to 225,561.97, 311,263.60 and 128,761.99
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Solution
The fourth proportional to 225,561.97, 311,263.60 and 128,761.99 is: 177,684.74
Step by Step Solution
- Step 1: Write the proportion equation
225,561.97 : 311,263.60 = 128,761.99 : x - Step 2: Convert to fraction form
225,561.97/311,263.60 = 128,761.99/x - Step 3: Cross multiply
225,561.97x = 311,263.60 × 128,761.99 - Step 4: Simplify right side
225,561.97x = 40,078,919,933.36 - Step 5: Solve for x
x = 40,078,919,933.36/225,561.97 - Step 6: Final answer
x = 177,684.74
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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.