Finding the Fourth Proportional to 397,816,121.67, 548,913,370.46 and 221,599,731.75
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Solution
The fourth proportional to 397,816,121.67, 548,913,370.46 and 221,599,731.75 is: 305,767,034.12
Step by Step Solution
- Step 1: Write the proportion equation
397,816,121.67 : 548,913,370.46 = 221,599,731.75 : x - Step 2: Convert to fraction form
397,816,121.67/548,913,370.46 = 221,599,731.75/x - Step 3: Cross multiply
397,816,121.67x = 548,913,370.46 × 221,599,731.75 - Step 4: Simplify right side
397,816,121.67x = 121,639,055,646,816,384 - Step 5: Solve for x
x = 121,639,055,646,816,384/397,816,121.67 - Step 6: Final answer
x = 305,767,034.12
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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.