Finding the Fourth Proportional to 326,813.80, 490,220.70 and 274,325.80
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Solution
The fourth proportional to 326,813.80, 490,220.70 and 274,325.80 is: 411,488.70
Step by Step Solution
- Step 1: Write the proportion equation
326,813.80 : 490,220.70 = 274,325.80 : x - Step 2: Convert to fraction form
326,813.80/490,220.70 = 274,325.80/x - Step 3: Cross multiply
326,813.80x = 490,220.70 × 274,325.80 - Step 4: Simplify right side
326,813.80x = 134,480,185,704.06 - Step 5: Solve for x
x = 134,480,185,704.06/326,813.80 - Step 6: Final answer
x = 411,488.70
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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.