Finding the Fourth Proportional to 399,351.39, 550,168.36 and 278,272.99
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Solution
The fourth proportional to 399,351.39, 550,168.36 and 278,272.99 is: 383,364.12
Step by Step Solution
- Step 1: Write the proportion equation
399,351.39 : 550,168.36 = 278,272.99 : x - Step 2: Convert to fraction form
399,351.39/550,168.36 = 278,272.99/x - Step 3: Cross multiply
399,351.39x = 550,168.36 × 278,272.99 - Step 4: Simplify right side
399,351.39x = 153,096,994,540.60 - Step 5: Solve for x
x = 153,096,994,540.60/399,351.39 - Step 6: Final answer
x = 383,364.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.