Finding the Fourth Proportional to 208,861.20, 313,291.80 and 125,917.20
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Solution
The fourth proportional to 208,861.20, 313,291.80 and 125,917.20 is: 188,875.80
Step by Step Solution
- Step 1: Write the proportion equation
208,861.20 : 313,291.80 = 125,917.20 : x - Step 2: Convert to fraction form
208,861.20/313,291.80 = 125,917.20/x - Step 3: Cross multiply
208,861.20x = 313,291.80 × 125,917.20 - Step 4: Simplify right side
208,861.20x = 39,448,826,238.96 - Step 5: Solve for x
x = 39,448,826,238.96/208,861.20 - Step 6: Final answer
x = 188,875.80
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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.