Finding the Fourth Proportional to 278,817.12, 417,990.60 and 120,926.68
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Solution
The fourth proportional to 278,817.12, 417,990.60 and 120,926.68 is: 181,288.06
Step by Step Solution
- Step 1: Write the proportion equation
278,817.12 : 417,990.60 = 120,926.68 : x - Step 2: Convert to fraction form
278,817.12/417,990.60 = 120,926.68/x - Step 3: Cross multiply
278,817.12x = 417,990.60 × 120,926.68 - Step 4: Simplify right side
278,817.12x = 50,546,215,529.21 - Step 5: Solve for x
x = 50,546,215,529.21/278,817.12 - Step 6: Final answer
x = 181,288.06
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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.