Finding the Fourth Proportional to 203,221.21, 305,020.95 and 103,456.09
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Solution
The fourth proportional to 203,221.21, 305,020.95 and 103,456.09 is: 155,280.42
Step by Step Solution
- Step 1: Write the proportion equation
203,221.21 : 305,020.95 = 103,456.09 : x - Step 2: Convert to fraction form
203,221.21/305,020.95 = 103,456.09/x - Step 3: Cross multiply
203,221.21x = 305,020.95 × 103,456.09 - Step 4: Simplify right side
203,221.21x = 31,556,274,855.09 - Step 5: Solve for x
x = 31,556,274,855.09/203,221.21 - Step 6: Final answer
x = 155,280.42
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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.