Finding the Fourth Proportional to 281,187.28, 421,251.18 and 138,865.96
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Solution
The fourth proportional to 281,187.28, 421,251.18 and 138,865.96 is: 208,037.32
Step by Step Solution
- Step 1: Write the proportion equation
281,187.28 : 421,251.18 = 138,865.96 : x - Step 2: Convert to fraction form
281,187.28/421,251.18 = 138,865.96/x - Step 3: Cross multiply
281,187.28x = 421,251.18 × 138,865.96 - Step 4: Simplify right side
281,187.28x = 58,497,449,511.83 - Step 5: Solve for x
x = 58,497,449,511.83/281,187.28 - Step 6: Final answer
x = 208,037.32
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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.