Finding the Fourth Proportional to 311,380.80, 429,785.66 and 202,756.26
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Solution
The fourth proportional to 311,380.80, 429,785.66 and 202,756.26 is: 279,855.83
Step by Step Solution
- Step 1: Write the proportion equation
311,380.80 : 429,785.66 = 202,756.26 : x - Step 2: Convert to fraction form
311,380.80/429,785.66 = 202,756.26/x - Step 3: Cross multiply
311,380.80x = 429,785.66 × 202,756.26 - Step 4: Simplify right side
311,380.80x = 87,141,733,023.23 - Step 5: Solve for x
x = 87,141,733,023.23/311,380.80 - Step 6: Final answer
x = 279,855.83
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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.