Finding the Fourth Proportional to 421,405.44, 632,108.68 and 172,087.44
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Solution
The fourth proportional to 421,405.44, 632,108.68 and 172,087.44 is: 258,131.37
Step by Step Solution
- Step 1: Write the proportion equation
421,405.44 : 632,108.68 = 172,087.44 : x - Step 2: Convert to fraction form
421,405.44/632,108.68 = 172,087.44/x - Step 3: Cross multiply
421,405.44x = 632,108.68 × 172,087.44 - Step 4: Simplify right side
421,405.44x = 108,777,964,542.98 - Step 5: Solve for x
x = 108,777,964,542.98/421,405.44 - Step 6: Final answer
x = 258,131.37
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.