Finding the Fourth Proportional to 319,201.20, 478,218.60 and 259,714.80
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Solution
The fourth proportional to 319,201.20, 478,218.60 and 259,714.80 is: 389,097.69
Step by Step Solution
- Step 1: Write the proportion equation
319,201.20 : 478,218.60 = 259,714.80 : x - Step 2: Convert to fraction form
319,201.20/478,218.60 = 259,714.80/x - Step 3: Cross multiply
319,201.20x = 478,218.60 × 259,714.80 - Step 4: Simplify right side
319,201.20x = 124,200,448,055.28 - Step 5: Solve for x
x = 124,200,448,055.28/319,201.20 - Step 6: Final answer
x = 389,097.69
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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.