Finding the Fourth Proportional to 256,955.36, 354,608.34 and 143,775.68
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Solution
The fourth proportional to 256,955.36, 354,608.34 and 143,775.68 is: 198,416.00
Step by Step Solution
- Step 1: Write the proportion equation
256,955.36 : 354,608.34 = 143,775.68 : x - Step 2: Convert to fraction form
256,955.36/354,608.34 = 143,775.68/x - Step 3: Cross multiply
256,955.36x = 354,608.34 × 143,775.68 - Step 4: Simplify right side
256,955.36x = 50,984,055,217.17 - Step 5: Solve for x
x = 50,984,055,217.17/256,955.36 - Step 6: Final answer
x = 198,416.00
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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.