Finding the Fourth Proportional to 278,343.70, 417,515.55 and 120,879.70
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Solution
The fourth proportional to 278,343.70, 417,515.55 and 120,879.70 is: 181,319.55
Step by Step Solution
- Step 1: Write the proportion equation
278,343.70 : 417,515.55 = 120,879.70 : x - Step 2: Convert to fraction form
278,343.70/417,515.55 = 120,879.70/x - Step 3: Cross multiply
278,343.70x = 417,515.55 × 120,879.70 - Step 4: Simplify right side
278,343.70x = 50,469,154,429.34 - Step 5: Solve for x
x = 50,469,154,429.34/278,343.70 - Step 6: Final answer
x = 181,319.55
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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.