Finding the Fourth Proportional to 311,969.06, 430,517.40 and 176,031.84
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Solution
The fourth proportional to 311,969.06, 430,517.40 and 176,031.84 is: 242,923.99
Step by Step Solution
- Step 1: Write the proportion equation
311,969.06 : 430,517.40 = 176,031.84 : x - Step 2: Convert to fraction form
311,969.06/430,517.40 = 176,031.84/x - Step 3: Cross multiply
311,969.06x = 430,517.40 × 176,031.84 - Step 4: Simplify right side
311,969.06x = 75,784,770,074.02 - Step 5: Solve for x
x = 75,784,770,074.02/311,969.06 - Step 6: Final answer
x = 242,923.99
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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.