Finding the Fourth Proportional to 306,246.87, 422,639.79 and 170,311.20
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Solution
The fourth proportional to 306,246.87, 422,639.79 and 170,311.20 is: 235,040.08
Step by Step Solution
- Step 1: Write the proportion equation
306,246.87 : 422,639.79 = 170,311.20 : x - Step 2: Convert to fraction form
306,246.87/422,639.79 = 170,311.20/x - Step 3: Cross multiply
306,246.87x = 422,639.79 × 170,311.20 - Step 4: Simplify right side
306,246.87x = 71,980,289,802.65 - Step 5: Solve for x
x = 71,980,289,802.65/306,246.87 - Step 6: Final answer
x = 235,040.08
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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.