Finding the Fourth Proportional to 311,414.19, 429,751.57 and 168,174.23
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Solution
The fourth proportional to 311,414.19, 429,751.57 and 168,174.23 is: 232,080.43
Step by Step Solution
- Step 1: Write the proportion equation
311,414.19 : 429,751.57 = 168,174.23 : x - Step 2: Convert to fraction form
311,414.19/429,751.57 = 168,174.23/x - Step 3: Cross multiply
311,414.19x = 429,751.57 × 168,174.23 - Step 4: Simplify right side
311,414.19x = 72,273,140,551.09 - Step 5: Solve for x
x = 72,273,140,551.09/311,414.19 - Step 6: Final answer
x = 232,080.43
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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.