Finding the Fourth Proportional to 379,284.12, 523,392.84 and 209,485.44
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Solution
The fourth proportional to 379,284.12, 523,392.84 and 209,485.44 is: 289,079.28
Step by Step Solution
- Step 1: Write the proportion equation
379,284.12 : 523,392.84 = 209,485.44 : x - Step 2: Convert to fraction form
379,284.12/523,392.84 = 209,485.44/x - Step 3: Cross multiply
379,284.12x = 523,392.84 × 209,485.44 - Step 4: Simplify right side
379,284.12x = 109,643,179,380.25 - Step 5: Solve for x
x = 109,643,179,380.25/379,284.12 - Step 6: Final answer
x = 289,079.28
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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.