Finding the Fourth Proportional to 289,990.80, 434,986.20 and 201,517.20
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Solution
The fourth proportional to 289,990.80, 434,986.20 and 201,517.20 is: 302,275.80
Step by Step Solution
- Step 1: Write the proportion equation
289,990.80 : 434,986.20 = 201,517.20 : x - Step 2: Convert to fraction form
289,990.80/434,986.20 = 201,517.20/x - Step 3: Cross multiply
289,990.80x = 434,986.20 × 201,517.20 - Step 4: Simplify right side
289,990.80x = 87,657,201,062.64 - Step 5: Solve for x
x = 87,657,201,062.64/289,990.80 - Step 6: Final answer
x = 302,275.80
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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.