Finding the Fourth Proportional to 220,214.84, 303,882.09 and 129,553.28
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Solution
The fourth proportional to 220,214.84, 303,882.09 and 129,553.28 is: 178,775.07
Step by Step Solution
- Step 1: Write the proportion equation
220,214.84 : 303,882.09 = 129,553.28 : x - Step 2: Convert to fraction form
220,214.84/303,882.09 = 129,553.28/x - Step 3: Cross multiply
220,214.84x = 303,882.09 × 129,553.28 - Step 4: Simplify right side
220,214.84x = 39,368,922,336.41 - Step 5: Solve for x
x = 39,368,922,336.41/220,214.84 - Step 6: Final answer
x = 178,775.07
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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.