Finding the Fourth Proportional to 212,404.20, 318,620.70 and 72,173.40
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Solution
The fourth proportional to 212,404.20, 318,620.70 and 72,173.40 is: 108,264.99
Step by Step Solution
- Step 1: Write the proportion equation
212,404.20 : 318,620.70 = 72,173.40 : x - Step 2: Convert to fraction form
212,404.20/318,620.70 = 72,173.40/x - Step 3: Cross multiply
212,404.20x = 318,620.70 × 72,173.40 - Step 4: Simplify right side
212,404.20x = 22,995,939,229.38 - Step 5: Solve for x
x = 22,995,939,229.38/212,404.20 - Step 6: Final answer
x = 108,264.99
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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.