Finding the Fourth Proportional to 309,817.14, 464,747.98 and 129,721.33
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Solution
The fourth proportional to 309,817.14, 464,747.98 and 129,721.33 is: 194,591.32
Step by Step Solution
- Step 1: Write the proportion equation
309,817.14 : 464,747.98 = 129,721.33 : x - Step 2: Convert to fraction form
309,817.14/464,747.98 = 129,721.33/x - Step 3: Cross multiply
309,817.14x = 464,747.98 × 129,721.33 - Step 4: Simplify right side
309,817.14x = 60,287,726,080.41 - Step 5: Solve for x
x = 60,287,726,080.41/309,817.14 - Step 6: Final answer
x = 194,591.32
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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.