Finding the Fourth Proportional to 283,679.20, 425,518.80 and 257,435.20
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Solution
The fourth proportional to 283,679.20, 425,518.80 and 257,435.20 is: 386,152.80
Step by Step Solution
- Step 1: Write the proportion equation
283,679.20 : 425,518.80 = 257,435.20 : x - Step 2: Convert to fraction form
283,679.20/425,518.80 = 257,435.20/x - Step 3: Cross multiply
283,679.20x = 425,518.80 × 257,435.20 - Step 4: Simplify right side
283,679.20x = 109,543,517,381.76 - Step 5: Solve for x
x = 109,543,517,381.76/283,679.20 - Step 6: Final answer
x = 386,152.80
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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.