Finding the Fourth Proportional to 289,724.10, 434,519.70 and 79,378.44
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Solution
The fourth proportional to 289,724.10, 434,519.70 and 79,378.44 is: 119,049.45
Step by Step Solution
- Step 1: Write the proportion equation
289,724.10 : 434,519.70 = 79,378.44 : x - Step 2: Convert to fraction form
289,724.10/434,519.70 = 79,378.44/x - Step 3: Cross multiply
289,724.10x = 434,519.70 × 79,378.44 - Step 4: Simplify right side
289,724.10x = 34,491,495,935.27 - Step 5: Solve for x
x = 34,491,495,935.27/289,724.10 - Step 6: Final answer
x = 119,049.45
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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.