Finding the Fourth Proportional to 283,675.20, 425,512.80 and 257,431.20
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Solution
The fourth proportional to 283,675.20, 425,512.80 and 257,431.20 is: 386,146.80
Step by Step Solution
- Step 1: Write the proportion equation
283,675.20 : 425,512.80 = 257,431.20 : x - Step 2: Convert to fraction form
283,675.20/425,512.80 = 257,431.20/x - Step 3: Cross multiply
283,675.20x = 425,512.80 × 257,431.20 - Step 4: Simplify right side
283,675.20x = 109,540,270,719.36 - Step 5: Solve for x
x = 109,540,270,719.36/283,675.20 - Step 6: Final answer
x = 386,146.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.