Finding the Fourth Proportional to 412,072.70, 618,106.88 and 131,583.74
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Solution
The fourth proportional to 412,072.70, 618,106.88 and 131,583.74 is: 197,374.92
Step by Step Solution
- Step 1: Write the proportion equation
412,072.70 : 618,106.88 = 131,583.74 : x - Step 2: Convert to fraction form
412,072.70/618,106.88 = 131,583.74/x - Step 3: Cross multiply
412,072.70x = 618,106.88 × 131,583.74 - Step 4: Simplify right side
412,072.70x = 81,332,814,990.13 - Step 5: Solve for x
x = 81,332,814,990.13/412,072.70 - Step 6: Final answer
x = 197,374.92
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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.