Finding the Fourth Proportional to 311,715.95, 430,159.39 and 175,748.70
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Solution
The fourth proportional to 311,715.95, 430,159.39 and 175,748.70 is: 242,528.35
Step by Step Solution
- Step 1: Write the proportion equation
311,715.95 : 430,159.39 = 175,748.70 : x - Step 2: Convert to fraction form
311,715.95/430,159.39 = 175,748.70/x - Step 3: Cross multiply
311,715.95x = 430,159.39 × 175,748.70 - Step 4: Simplify right side
311,715.95x = 75,599,954,759.02 - Step 5: Solve for x
x = 75,599,954,759.02/311,715.95 - Step 6: Final answer
x = 242,528.35
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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.