Finding the Fourth Proportional to 311,976.19, 430,515.83 and 195,752.31
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Solution
The fourth proportional to 311,976.19, 430,515.83 and 195,752.31 is: 270,131.09
Step by Step Solution
- Step 1: Write the proportion equation
311,976.19 : 430,515.83 = 195,752.31 : x - Step 2: Convert to fraction form
311,976.19/430,515.83 = 195,752.31/x - Step 3: Cross multiply
311,976.19x = 430,515.83 × 195,752.31 - Step 4: Simplify right side
311,976.19x = 84,274,466,325.15 - Step 5: Solve for x
x = 84,274,466,325.15/311,976.19 - Step 6: Final answer
x = 270,131.09
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1.5x scale
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.