Finding the Fourth Proportional to 312,763.14, 431,615.43 and 169,524.21
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Solution
The fourth proportional to 312,763.14, 431,615.43 and 169,524.21 is: 233,944.65
Step by Step Solution
- Step 1: Write the proportion equation
312,763.14 : 431,615.43 = 169,524.21 : x - Step 2: Convert to fraction form
312,763.14/431,615.43 = 169,524.21/x - Step 3: Cross multiply
312,763.14x = 431,615.43 × 169,524.21 - Step 4: Simplify right side
312,763.14x = 73,169,264,794.56 - Step 5: Solve for x
x = 73,169,264,794.56/312,763.14 - Step 6: Final answer
x = 233,944.65
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1.5x scale
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.