Finding the Fourth Proportional to 311,757.21, 430,188.41 and 175,783.06
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Solution
The fourth proportional to 311,757.21, 430,188.41 and 175,783.06 is: 242,560.02
Step by Step Solution
- Step 1: Write the proportion equation
311,757.21 : 430,188.41 = 175,783.06 : x - Step 2: Convert to fraction form
311,757.21/430,188.41 = 175,783.06/x - Step 3: Cross multiply
311,757.21x = 430,188.41 × 175,783.06 - Step 4: Simplify right side
311,757.21x = 75,619,836,063.53 - Step 5: Solve for x
x = 75,619,836,063.53/311,757.21 - Step 6: Final answer
x = 242,560.02
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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.