Finding the Fourth Proportional to 378,090.73, 521,958.11 and 256,226.92
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Solution
The fourth proportional to 378,090.73, 521,958.11 and 256,226.92 is: 353,723.88
Step by Step Solution
- Step 1: Write the proportion equation
378,090.73 : 521,958.11 = 256,226.92 : x - Step 2: Convert to fraction form
378,090.73/521,958.11 = 256,226.92/x - Step 3: Cross multiply
378,090.73x = 521,958.11 × 256,226.92 - Step 4: Simplify right side
378,090.73x = 133,739,718,894.32 - Step 5: Solve for x
x = 133,739,718,894.32/378,090.73 - Step 6: Final answer
x = 353,723.88
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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.