Finding the Fourth Proportional to 220,079.06, 303,710.36 and 129,438.84
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Solution
The fourth proportional to 220,079.06, 303,710.36 and 129,438.84 is: 178,626.34
Step by Step Solution
- Step 1: Write the proportion equation
220,079.06 : 303,710.36 = 129,438.84 : x - Step 2: Convert to fraction form
220,079.06/303,710.36 = 129,438.84/x - Step 3: Cross multiply
220,079.06x = 303,710.36 × 129,438.84 - Step 4: Simplify right side
220,079.06x = 39,311,916,694.38 - Step 5: Solve for x
x = 39,311,916,694.38/220,079.06 - Step 6: Final answer
x = 178,626.34
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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.