Finding the Fourth Proportional to 278,984.25, 418,476.58 and 91,995.75
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Solution
The fourth proportional to 278,984.25, 418,476.58 and 91,995.75 is: 137,993.69
Step by Step Solution
- Step 1: Write the proportion equation
278,984.25 : 418,476.58 = 91,995.75 : x - Step 2: Convert to fraction form
278,984.25/418,476.58 = 91,995.75/x - Step 3: Cross multiply
278,984.25x = 418,476.58 × 91,995.75 - Step 4: Simplify right side
278,984.25x = 38,498,066,604.55 - Step 5: Solve for x
x = 38,498,066,604.55/278,984.25 - Step 6: Final answer
x = 137,993.69
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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.