Finding the Fourth Proportional to 355,318.11, 490,181.49 and 211,994.82
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Solution
The fourth proportional to 355,318.11, 490,181.49 and 211,994.82 is: 292,458.88
Step by Step Solution
- Step 1: Write the proportion equation
355,318.11 : 490,181.49 = 211,994.82 : x - Step 2: Convert to fraction form
355,318.11/490,181.49 = 211,994.82/x - Step 3: Cross multiply
355,318.11x = 490,181.49 × 211,994.82 - Step 4: Simplify right side
355,318.11x = 103,915,936,739.88 - Step 5: Solve for x
x = 103,915,936,739.88/355,318.11 - Step 6: Final answer
x = 292,458.88
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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.