Finding the Fourth Proportional to 312,610.87, 431,245.70 and 205,165.99
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Solution
The fourth proportional to 312,610.87, 431,245.70 and 205,165.99 is: 283,025.83
Step by Step Solution
- Step 1: Write the proportion equation
312,610.87 : 431,245.70 = 205,165.99 : x - Step 2: Convert to fraction form
312,610.87/431,245.70 = 205,165.99/x - Step 3: Cross multiply
312,610.87x = 431,245.70 × 205,165.99 - Step 4: Simplify right side
312,610.87x = 88,476,948,817.51 - Step 5: Solve for x
x = 88,476,948,817.51/312,610.87 - Step 6: Final answer
x = 283,025.83
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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.