Finding the Fourth Proportional to 397,816,121.92, 548,913,370.80 and 221,599,732
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Solution
The fourth proportional to 397,816,121.92, 548,913,370.80 and 221,599,732 is: 305,767,034.46
Step by Step Solution
- Step 1: Write the proportion equation
397,816,121.92 : 548,913,370.80 = 221,599,732 : x - Step 2: Convert to fraction form
397,816,121.92/548,913,370.80 = 221,599,732/x - Step 3: Cross multiply
397,816,121.92x = 548,913,370.80 × 221,599,732 - Step 4: Simplify right side
397,816,121.92x = 121,639,055,860,496,608 - Step 5: Solve for x
x = 121,639,055,860,496,608/397,816,121.92 - Step 6: Final answer
x = 305,767,034.46
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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.