Finding the Fourth Proportional to 278,816.99, 417,990.35 and 120,926.52
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Solution
The fourth proportional to 278,816.99, 417,990.35 and 120,926.52 is: 181,287.80
Step by Step Solution
- Step 1: Write the proportion equation
278,816.99 : 417,990.35 = 120,926.52 : x - Step 2: Convert to fraction form
278,816.99/417,990.35 = 120,926.52/x - Step 3: Cross multiply
278,816.99x = 417,990.35 × 120,926.52 - Step 4: Simplify right side
278,816.99x = 50,546,117,814.45 - Step 5: Solve for x
x = 50,546,117,814.45/278,816.99 - Step 6: Final answer
x = 181,287.80
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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.