Finding the Fourth Proportional to 213,828.30, 320,813.70 and 71,687.63
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Solution
The fourth proportional to 213,828.30, 320,813.70 and 71,687.63 is: 107,555.32
Step by Step Solution
- Step 1: Write the proportion equation
213,828.30 : 320,813.70 = 71,687.63 : x - Step 2: Convert to fraction form
213,828.30/320,813.70 = 71,687.63/x - Step 3: Cross multiply
213,828.30x = 320,813.70 × 71,687.63 - Step 4: Simplify right side
213,828.30x = 22,998,372,220.46 - Step 5: Solve for x
x = 22,998,372,220.46/213,828.30 - Step 6: Final answer
x = 107,555.32
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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.