Finding the Fourth Proportional to 305,603.76, 421,713.24 and 169,631.28
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Solution
The fourth proportional to 305,603.76, 421,713.24 and 169,631.28 is: 234,080.09
Step by Step Solution
- Step 1: Write the proportion equation
305,603.76 : 421,713.24 = 169,631.28 : x - Step 2: Convert to fraction form
305,603.76/421,713.24 = 169,631.28/x - Step 3: Cross multiply
305,603.76x = 421,713.24 × 169,631.28 - Step 4: Simplify right side
305,603.76x = 71,535,756,694.15 - Step 5: Solve for x
x = 71,535,756,694.15/305,603.76 - Step 6: Final answer
x = 234,080.09
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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.