Finding the Fourth Proportional to 311,509.18, 429,882.40 and 168,269.18
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Solution
The fourth proportional to 311,509.18, 429,882.40 and 168,269.18 is: 232,211.32
Step by Step Solution
- Step 1: Write the proportion equation
311,509.18 : 429,882.40 = 168,269.18 : x - Step 2: Convert to fraction form
311,509.18/429,882.40 = 168,269.18/x - Step 3: Cross multiply
311,509.18x = 429,882.40 × 168,269.18 - Step 4: Simplify right side
311,509.18x = 72,335,958,944.43 - Step 5: Solve for x
x = 72,335,958,944.43/311,509.18 - Step 6: Final answer
x = 232,211.32
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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.