Finding the Fourth Proportional to 317,778.75, 438,573.60 and 183,642.75
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Solution
The fourth proportional to 317,778.75, 438,573.60 and 183,642.75 is: 253,449.49
Step by Step Solution
- Step 1: Write the proportion equation
317,778.75 : 438,573.60 = 183,642.75 : x - Step 2: Convert to fraction form
317,778.75/438,573.60 = 183,642.75/x - Step 3: Cross multiply
317,778.75x = 438,573.60 × 183,642.75 - Step 4: Simplify right side
317,778.75x = 80,540,861,981.40 - Step 5: Solve for x
x = 80,540,861,981.40/317,778.75 - Step 6: Final answer
x = 253,449.49
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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.