Finding the Fourth Proportional to 215,057.44, 322,639.08 and 74,817.28
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Solution
The fourth proportional to 215,057.44, 322,639.08 and 74,817.28 is: 112,244.33
Step by Step Solution
- Step 1: Write the proportion equation
215,057.44 : 322,639.08 = 74,817.28 : x - Step 2: Convert to fraction form
215,057.44/322,639.08 = 74,817.28/x - Step 3: Cross multiply
215,057.44x = 322,639.08 × 74,817.28 - Step 4: Simplify right side
215,057.44x = 24,138,978,387.30 - Step 5: Solve for x
x = 24,138,978,387.30/215,057.44 - Step 6: Final answer
x = 112,244.33
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.