Finding the Fourth Proportional to 395,278.82, 545,486.51 and 213,990.75
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Solution
The fourth proportional to 395,278.82, 545,486.51 and 213,990.75 is: 295,308.18
Step by Step Solution
- Step 1: Write the proportion equation
395,278.82 : 545,486.51 = 213,990.75 : x - Step 2: Convert to fraction form
395,278.82/545,486.51 = 213,990.75/x - Step 3: Cross multiply
395,278.82x = 545,486.51 × 213,990.75 - Step 4: Simplify right side
395,278.82x = 116,729,067,389.78 - Step 5: Solve for x
x = 116,729,067,389.78/395,278.82 - Step 6: Final answer
x = 295,308.18
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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.