Finding the Fourth Proportional to 312,440.85, 431,168.40 and 169,201.26
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Solution
The fourth proportional to 312,440.85, 431,168.40 and 169,201.26 is: 233,497.75
Step by Step Solution
- Step 1: Write the proportion equation
312,440.85 : 431,168.40 = 169,201.26 : x - Step 2: Convert to fraction form
312,440.85/431,168.40 = 169,201.26/x - Step 3: Cross multiply
312,440.85x = 431,168.40 × 169,201.26 - Step 4: Simplify right side
312,440.85x = 72,954,236,552.18 - Step 5: Solve for x
x = 72,954,236,552.18/312,440.85 - Step 6: Final answer
x = 233,497.75
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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.