Finding the Fourth Proportional to 321,121.27, 479,728.80 and 207,878.95
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Solution
The fourth proportional to 321,121.27, 479,728.80 and 207,878.95 is: 310,554.07
Step by Step Solution
- Step 1: Write the proportion equation
321,121.27 : 479,728.80 = 207,878.95 : x - Step 2: Convert to fraction form
321,121.27/479,728.80 = 207,878.95/x - Step 3: Cross multiply
321,121.27x = 479,728.80 × 207,878.95 - Step 4: Simplify right side
321,121.27x = 99,725,515,790.72 - Step 5: Solve for x
x = 99,725,515,790.72/321,121.27 - Step 6: Final answer
x = 310,554.07
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.