Finding the Fourth Proportional to 209,964.23, 290,027.19 and 155,626.55
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Solution
The fourth proportional to 209,964.23, 290,027.19 and 155,626.55 is: 214,969.62
Step by Step Solution
- Step 1: Write the proportion equation
209,964.23 : 290,027.19 = 155,626.55 : x - Step 2: Convert to fraction form
209,964.23/290,027.19 = 155,626.55/x - Step 3: Cross multiply
209,964.23x = 290,027.19 × 155,626.55 - Step 4: Simplify right side
209,964.23x = 45,135,929,535.76 - Step 5: Solve for x
x = 45,135,929,535.76/209,964.23 - Step 6: Final answer
x = 214,969.62
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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.