Finding the Fourth Proportional to 311,907.70, 467,861.55 and 171,939.70
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Solution
The fourth proportional to 311,907.70, 467,861.55 and 171,939.70 is: 257,909.55
Step by Step Solution
- Step 1: Write the proportion equation
311,907.70 : 467,861.55 = 171,939.70 : x - Step 2: Convert to fraction form
311,907.70/467,861.55 = 171,939.70/x - Step 3: Cross multiply
311,907.70x = 467,861.55 × 171,939.70 - Step 4: Simplify right side
311,907.70x = 80,443,974,548.54 - Step 5: Solve for x
x = 80,443,974,548.54/311,907.70 - Step 6: Final answer
x = 257,909.55
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.