Finding the Fourth Proportional to 330,911.10, 492,624.09 and 328,942.80
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Solution
The fourth proportional to 330,911.10, 492,624.09 and 328,942.80 is: 489,693.90
Step by Step Solution
- Step 1: Write the proportion equation
330,911.10 : 492,624.09 = 328,942.80 : x - Step 2: Convert to fraction form
330,911.10/492,624.09 = 328,942.80/x - Step 3: Cross multiply
330,911.10x = 492,624.09 × 328,942.80 - Step 4: Simplify right side
330,911.10x = 162,045,147,512.05 - Step 5: Solve for x
x = 162,045,147,512.05/330,911.10 - Step 6: Final answer
x = 489,693.90
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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.