Finding the Fourth Proportional to 289,157.70, 398,990.16 and 181,651.62
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Solution
The fourth proportional to 289,157.70, 398,990.16 and 181,651.62 is: 250,649.42
Step by Step Solution
- Step 1: Write the proportion equation
289,157.70 : 398,990.16 = 181,651.62 : x - Step 2: Convert to fraction form
289,157.70/398,990.16 = 181,651.62/x - Step 3: Cross multiply
289,157.70x = 398,990.16 × 181,651.62 - Step 4: Simplify right side
289,157.70x = 72,477,208,928.06 - Step 5: Solve for x
x = 72,477,208,928.06/289,157.70 - Step 6: Final answer
x = 250,649.42
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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.