Finding the Fourth Proportional to 290,471.28, 435,878.08 and 122,021.12
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Solution
The fourth proportional to 290,471.28, 435,878.08 and 122,021.12 is: 183,103.58
Step by Step Solution
- Step 1: Write the proportion equation
290,471.28 : 435,878.08 = 122,021.12 : x - Step 2: Convert to fraction form
290,471.28/435,878.08 = 122,021.12/x - Step 3: Cross multiply
290,471.28x = 435,878.08 × 122,021.12 - Step 4: Simplify right side
290,471.28x = 53,186,331,505.05 - Step 5: Solve for x
x = 53,186,331,505.05/290,471.28 - Step 6: Final answer
x = 183,103.58
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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.