Finding the Fourth Proportional to 220,201.13, 303,868.26 and 128,329.11
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Solution
The fourth proportional to 220,201.13, 303,868.26 and 128,329.11 is: 177,088.75
Step by Step Solution
- Step 1: Write the proportion equation
220,201.13 : 303,868.26 = 128,329.11 : x - Step 2: Convert to fraction form
220,201.13/303,868.26 = 128,329.11/x - Step 3: Cross multiply
220,201.13x = 303,868.26 × 128,329.11 - Step 4: Simplify right side
220,201.13x = 38,995,143,363.05 - Step 5: Solve for x
x = 38,995,143,363.05/220,201.13 - Step 6: Final answer
x = 177,088.75
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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.