Finding the Fourth Proportional to 305,914.24, 421,927.68 and 268,122.88
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Solution
The fourth proportional to 305,914.24, 421,927.68 and 268,122.88 is: 369,804.51
Step by Step Solution
- Step 1: Write the proportion equation
305,914.24 : 421,927.68 = 268,122.88 : x - Step 2: Convert to fraction form
305,914.24/421,927.68 = 268,122.88/x - Step 3: Cross multiply
305,914.24x = 421,927.68 × 268,122.88 - Step 4: Simplify right side
305,914.24x = 113,128,464,713.32 - Step 5: Solve for x
x = 113,128,464,713.32/305,914.24 - Step 6: Final answer
x = 369,804.51
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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.