Finding the Fourth Proportional to 225,639.84, 311,343.44 and 128,799.44
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Solution
The fourth proportional to 225,639.84, 311,343.44 and 128,799.44 is: 177,720.66
Step by Step Solution
- Step 1: Write the proportion equation
225,639.84 : 311,343.44 = 128,799.44 : x - Step 2: Convert to fraction form
225,639.84/311,343.44 = 128,799.44/x - Step 3: Cross multiply
225,639.84x = 311,343.44 × 128,799.44 - Step 4: Simplify right side
225,639.84x = 40,100,860,719.67 - Step 5: Solve for x
x = 40,100,860,719.67/225,639.84 - Step 6: Final answer
x = 177,720.66
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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.