Finding the Fourth Proportional to 213,863.19, 320,648.97 and 108,478.95
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Solution
The fourth proportional to 213,863.19, 320,648.97 and 108,478.95 is: 162,644.46
Step by Step Solution
- Step 1: Write the proportion equation
213,863.19 : 320,648.97 = 108,478.95 : x - Step 2: Convert to fraction form
213,863.19/320,648.97 = 108,478.95/x - Step 3: Cross multiply
213,863.19x = 320,648.97 × 108,478.95 - Step 4: Simplify right side
213,863.19x = 34,783,663,584.18 - Step 5: Solve for x
x = 34,783,663,584.18/213,863.19 - Step 6: Final answer
x = 162,644.46
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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.