Finding the Fourth Proportional to 213,828.16, 320,990.70 and 125,145.31
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Solution
The fourth proportional to 213,828.16, 320,990.70 and 125,145.31 is: 187,863.38
Step by Step Solution
- Step 1: Write the proportion equation
213,828.16 : 320,990.70 = 125,145.31 : x - Step 2: Convert to fraction form
213,828.16/320,990.70 = 125,145.31/x - Step 3: Cross multiply
213,828.16x = 320,990.70 × 125,145.31 - Step 4: Simplify right side
213,828.16x = 40,170,480,658.62 - Step 5: Solve for x
x = 40,170,480,658.62/213,828.16 - Step 6: Final answer
x = 187,863.38
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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.