Finding the Fourth Proportional to 225,556.24, 311,228.05 and 128,715.88
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Solution
The fourth proportional to 225,556.24, 311,228.05 and 128,715.88 is: 177,605.33
Step by Step Solution
- Step 1: Write the proportion equation
225,556.24 : 311,228.05 = 128,715.88 : x - Step 2: Convert to fraction form
225,556.24/311,228.05 = 128,715.88/x - Step 3: Cross multiply
225,556.24x = 311,228.05 × 128,715.88 - Step 4: Simplify right side
225,556.24x = 40,059,990,824.13 - Step 5: Solve for x
x = 40,059,990,824.13/225,556.24 - Step 6: Final answer
x = 177,605.33
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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.