Finding the Fourth Proportional to 256,131.57, 353,428.97 and 142,959.09
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Solution
The fourth proportional to 256,131.57, 353,428.97 and 142,959.09 is: 197,265.35
Step by Step Solution
- Step 1: Write the proportion equation
256,131.57 : 353,428.97 = 142,959.09 : x - Step 2: Convert to fraction form
256,131.57/353,428.97 = 142,959.09/x - Step 3: Cross multiply
256,131.57x = 353,428.97 × 142,959.09 - Step 4: Simplify right side
256,131.57x = 50,525,883,216.04 - Step 5: Solve for x
x = 50,525,883,216.04/256,131.57 - Step 6: Final answer
x = 197,265.35
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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.