Finding the Fourth Proportional to 378,651.36, 522,445.68 and 231,438.96
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Solution
The fourth proportional to 378,651.36, 522,445.68 and 231,438.96 is: 319,328.80
Step by Step Solution
- Step 1: Write the proportion equation
378,651.36 : 522,445.68 = 231,438.96 : x - Step 2: Convert to fraction form
378,651.36/522,445.68 = 231,438.96/x - Step 3: Cross multiply
378,651.36x = 522,445.68 × 231,438.96 - Step 4: Simplify right side
378,651.36x = 120,914,284,835.69 - Step 5: Solve for x
x = 120,914,284,835.69/378,651.36 - Step 6: Final answer
x = 319,328.80
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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.