Finding the Fourth Proportional to 256,634.28, 354,163.14 and 143,461.80
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Solution
The fourth proportional to 256,634.28, 354,163.14 and 143,461.80 is: 197,981.66
Step by Step Solution
- Step 1: Write the proportion equation
256,634.28 : 354,163.14 = 143,461.80 : x - Step 2: Convert to fraction form
256,634.28/354,163.14 = 143,461.80/x - Step 3: Cross multiply
256,634.28x = 354,163.14 × 143,461.80 - Step 4: Simplify right side
256,634.28x = 50,808,881,558.05 - Step 5: Solve for x
x = 50,808,881,558.05/256,634.28 - Step 6: Final answer
x = 197,981.66
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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.