Finding the Fourth Proportional to 281,564.12, 388,554.62 and 154,240.62
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Solution
The fourth proportional to 281,564.12, 388,554.62 and 154,240.62 is: 212,849.94
Step by Step Solution
- Step 1: Write the proportion equation
281,564.12 : 388,554.62 = 154,240.62 : x - Step 2: Convert to fraction form
281,564.12/388,554.62 = 154,240.62/x - Step 3: Cross multiply
281,564.12x = 388,554.62 × 154,240.62 - Step 4: Simplify right side
281,564.12x = 59,930,904,721.46 - Step 5: Solve for x
x = 59,930,904,721.46/281,564.12 - Step 6: Final answer
x = 212,849.94
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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.