Finding the Fourth Proportional to 225,616.05, 311,310.68 and 128,775.69
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Solution
The fourth proportional to 225,616.05, 311,310.68 and 128,775.69 is: 177,687.92
Step by Step Solution
- Step 1: Write the proportion equation
225,616.05 : 311,310.68 = 128,775.69 : x - Step 2: Convert to fraction form
225,616.05/311,310.68 = 128,775.69/x - Step 3: Cross multiply
225,616.05x = 311,310.68 × 128,775.69 - Step 4: Simplify right side
225,616.05x = 40,089,246,207.42 - Step 5: Solve for x
x = 40,089,246,207.42/225,616.05 - Step 6: Final answer
x = 177,687.92
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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.