Finding the Fourth Proportional to 311,021.65, 429,102.88 and 188,553.52
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Solution
The fourth proportional to 311,021.65, 429,102.88 and 188,553.52 is: 260,138.99
Step by Step Solution
- Step 1: Write the proportion equation
311,021.65 : 429,102.88 = 188,553.52 : x - Step 2: Convert to fraction form
311,021.65/429,102.88 = 188,553.52/x - Step 3: Cross multiply
311,021.65x = 429,102.88 × 188,553.52 - Step 4: Simplify right side
311,021.65x = 80,908,858,466.14 - Step 5: Solve for x
x = 80,908,858,466.14/311,021.65 - Step 6: Final answer
x = 260,138.99
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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.