Finding the Fourth Proportional to 274,578.42, 378,900.39 and 153,718.74
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Solution
The fourth proportional to 274,578.42, 378,900.39 and 153,718.74 is: 212,121.88
Step by Step Solution
- Step 1: Write the proportion equation
274,578.42 : 378,900.39 = 153,718.74 : x - Step 2: Convert to fraction form
274,578.42/378,900.39 = 153,718.74/x - Step 3: Cross multiply
274,578.42x = 378,900.39 × 153,718.74 - Step 4: Simplify right side
274,578.42x = 58,244,090,536.31 - Step 5: Solve for x
x = 58,244,090,536.31/274,578.42 - Step 6: Final answer
x = 212,121.88
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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.