Finding the Fourth Proportional to 278,883.81, 418,250.99 and 121,074.75
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Solution
The fourth proportional to 278,883.81, 418,250.99 and 121,074.75 is: 181,579.68
Step by Step Solution
- Step 1: Write the proportion equation
278,883.81 : 418,250.99 = 121,074.75 : x - Step 2: Convert to fraction form
278,883.81/418,250.99 = 121,074.75/x - Step 3: Cross multiply
278,883.81x = 418,250.99 × 121,074.75 - Step 4: Simplify right side
278,883.81x = 50,639,634,354.19 - Step 5: Solve for x
x = 50,639,634,354.19/278,883.81 - Step 6: Final answer
x = 181,579.68
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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.