Finding the Fourth Proportional to 209,021.15, 288,537.41 and 141,129.99
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Solution
The fourth proportional to 209,021.15, 288,537.41 and 141,129.99 is: 194,818.95
Step by Step Solution
- Step 1: Write the proportion equation
209,021.15 : 288,537.41 = 141,129.99 : x - Step 2: Convert to fraction form
209,021.15/288,537.41 = 141,129.99/x - Step 3: Cross multiply
209,021.15x = 288,537.41 × 141,129.99 - Step 4: Simplify right side
209,021.15x = 40,721,282,140.75 - Step 5: Solve for x
x = 40,721,282,140.75/209,021.15 - Step 6: Final answer
x = 194,818.95
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.