Finding the Fourth Proportional to 235,783.26, 325,380.90 and 128,354.07
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Solution
The fourth proportional to 235,783.26, 325,380.90 and 128,354.07 is: 177,128.62
Step by Step Solution
- Step 1: Write the proportion equation
235,783.26 : 325,380.90 = 128,354.07 : x - Step 2: Convert to fraction form
235,783.26/325,380.90 = 128,354.07/x - Step 3: Cross multiply
235,783.26x = 325,380.90 × 128,354.07 - Step 4: Simplify right side
235,783.26x = 41,763,962,815.26 - Step 5: Solve for x
x = 41,763,962,815.26/235,783.26 - Step 6: Final answer
x = 177,128.62
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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.