Finding the Fourth Proportional to 251,376.14, 346,890.21 and 138,198.02
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Solution
The fourth proportional to 251,376.14, 346,890.21 and 138,198.02 is: 190,708.39
Step by Step Solution
- Step 1: Write the proportion equation
251,376.14 : 346,890.21 = 138,198.02 : x - Step 2: Convert to fraction form
251,376.14/346,890.21 = 138,198.02/x - Step 3: Cross multiply
251,376.14x = 346,890.21 × 138,198.02 - Step 4: Simplify right side
251,376.14x = 47,939,540,179.38 - Step 5: Solve for x
x = 47,939,540,179.38/251,376.14 - Step 6: Final answer
x = 190,708.39
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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.