Finding the Fourth Proportional to 278,884.80, 418,327.20 and 259,201.80
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Solution
The fourth proportional to 278,884.80, 418,327.20 and 259,201.80 is: 388,802.70
Step by Step Solution
- Step 1: Write the proportion equation
278,884.80 : 418,327.20 = 259,201.80 : x - Step 2: Convert to fraction form
278,884.80/418,327.20 = 259,201.80/x - Step 3: Cross multiply
278,884.80x = 418,327.20 × 259,201.80 - Step 4: Simplify right side
278,884.80x = 108,431,163,228.96 - Step 5: Solve for x
x = 108,431,163,228.96/278,884.80 - Step 6: Final answer
x = 388,802.70
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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.