Finding the Fourth Proportional to 283,531.20, 425,296.80 and 257,287.20
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Solution
The fourth proportional to 283,531.20, 425,296.80 and 257,287.20 is: 385,930.80
Step by Step Solution
- Step 1: Write the proportion equation
283,531.20 : 425,296.80 = 257,287.20 : x - Step 2: Convert to fraction form
283,531.20/425,296.80 = 257,287.20/x - Step 3: Cross multiply
283,531.20x = 425,296.80 × 257,287.20 - Step 4: Simplify right side
283,531.20x = 109,423,422,840.96 - Step 5: Solve for x
x = 109,423,422,840.96/283,531.20 - Step 6: Final answer
x = 385,930.80
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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.