Finding the Fourth Proportional to 289,044.36, 398,991.96 and 193,516.20
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Solution
The fourth proportional to 289,044.36, 398,991.96 and 193,516.20 is: 267,126.50
Step by Step Solution
- Step 1: Write the proportion equation
289,044.36 : 398,991.96 = 193,516.20 : x - Step 2: Convert to fraction form
289,044.36/398,991.96 = 193,516.20/x - Step 3: Cross multiply
289,044.36x = 398,991.96 × 193,516.20 - Step 4: Simplify right side
289,044.36x = 77,211,407,929.75 - Step 5: Solve for x
x = 77,211,407,929.75/289,044.36 - Step 6: Final answer
x = 267,126.50
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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.