Finding the Fourth Proportional to 321,761.70, 482,799.99 and 129,628.14
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Solution
The fourth proportional to 321,761.70, 482,799.99 and 129,628.14 is: 194,505.64
Step by Step Solution
- Step 1: Write the proportion equation
321,761.70 : 482,799.99 = 129,628.14 : x - Step 2: Convert to fraction form
321,761.70/482,799.99 = 129,628.14/x - Step 3: Cross multiply
321,761.70x = 482,799.99 × 129,628.14 - Step 4: Simplify right side
321,761.70x = 62,584,464,695.72 - Step 5: Solve for x
x = 62,584,464,695.72/321,761.70 - Step 6: Final answer
x = 194,505.64
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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.