Finding the Fourth Proportional to 326,891.80, 490,337.70 and 274,403.80
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Solution
The fourth proportional to 326,891.80, 490,337.70 and 274,403.80 is: 411,605.70
Step by Step Solution
- Step 1: Write the proportion equation
326,891.80 : 490,337.70 = 274,403.80 : x - Step 2: Convert to fraction form
326,891.80/490,337.70 = 274,403.80/x - Step 3: Cross multiply
326,891.80x = 490,337.70 × 274,403.80 - Step 4: Simplify right side
326,891.80x = 134,550,528,163.26 - Step 5: Solve for x
x = 134,550,528,163.26/326,891.80 - Step 6: Final answer
x = 411,605.70
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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.