Finding the Fourth Proportional to 378,405.54, 522,175.68 and 217,147.23
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Solution
The fourth proportional to 378,405.54, 522,175.68 and 217,147.23 is: 299,649.43
Step by Step Solution
- Step 1: Write the proportion equation
378,405.54 : 522,175.68 = 217,147.23 : x - Step 2: Convert to fraction form
378,405.54/522,175.68 = 217,147.23/x - Step 3: Cross multiply
378,405.54x = 522,175.68 × 217,147.23 - Step 4: Simplify right side
378,405.54x = 113,389,002,485.37 - Step 5: Solve for x
x = 113,389,002,485.37/378,405.54 - Step 6: Final answer
x = 299,649.43
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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.