Finding the Fourth Proportional to 213,905.80, 320,858.70 and 203,537.80
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Solution
The fourth proportional to 213,905.80, 320,858.70 and 203,537.80 is: 305,306.70
Step by Step Solution
- Step 1: Write the proportion equation
213,905.80 : 320,858.70 = 203,537.80 : x - Step 2: Convert to fraction form
213,905.80/320,858.70 = 203,537.80/x - Step 3: Cross multiply
213,905.80x = 320,858.70 × 203,537.80 - Step 4: Simplify right side
213,905.80x = 65,306,873,908.86 - Step 5: Solve for x
x = 65,306,873,908.86/213,905.80 - Step 6: Final answer
x = 305,306.70
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1.5x scale
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.