Finding the Fourth Proportional to 381,778.80, 526,879.12 and 212,012.92
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Solution
The fourth proportional to 381,778.80, 526,879.12 and 212,012.92 is: 292,591.37
Step by Step Solution
- Step 1: Write the proportion equation
381,778.80 : 526,879.12 = 212,012.92 : x - Step 2: Convert to fraction form
381,778.80/526,879.12 = 212,012.92/x - Step 3: Cross multiply
381,778.80x = 526,879.12 × 212,012.92 - Step 4: Simplify right side
381,778.80x = 111,705,180,718.23 - Step 5: Solve for x
x = 111,705,180,718.23/381,778.80 - Step 6: Final answer
x = 292,591.37
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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.