Finding the Fourth Proportional to 318,367.47, 477,551.21 and 131,173.23
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Solution
The fourth proportional to 318,367.47, 477,551.21 and 131,173.23 is: 196,759.85
Step by Step Solution
- Step 1: Write the proportion equation
318,367.47 : 477,551.21 = 131,173.23 : x - Step 2: Convert to fraction form
318,367.47/477,551.21 = 131,173.23/x - Step 3: Cross multiply
318,367.47x = 477,551.21 × 131,173.23 - Step 4: Simplify right side
318,367.47x = 62,641,934,050.24 - Step 5: Solve for x
x = 62,641,934,050.24/318,367.47 - Step 6: Final answer
x = 196,759.85
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Double scale
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Similar ratio
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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.