Finding the Fourth Proportional to 305,385.97, 421,257.54 and 190,465.09
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Solution
The fourth proportional to 305,385.97, 421,257.54 and 190,465.09 is: 262,732.63
Step by Step Solution
- Step 1: Write the proportion equation
305,385.97 : 421,257.54 = 190,465.09 : x - Step 2: Convert to fraction form
305,385.97/421,257.54 = 190,465.09/x - Step 3: Cross multiply
305,385.97x = 421,257.54 × 190,465.09 - Step 4: Simplify right side
305,385.97x = 80,234,856,560.50 - Step 5: Solve for x
x = 80,234,856,560.50/305,385.97 - Step 6: Final answer
x = 262,732.63
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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.