Finding the Fourth Proportional to 280,504.53, 420,793.20 and 128,664.99
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Solution
The fourth proportional to 280,504.53, 420,793.20 and 128,664.99 is: 193,014.18
Step by Step Solution
- Step 1: Write the proportion equation
280,504.53 : 420,793.20 = 128,664.99 : x - Step 2: Convert to fraction form
280,504.53/420,793.20 = 128,664.99/x - Step 3: Cross multiply
280,504.53x = 420,793.20 × 128,664.99 - Step 4: Simplify right side
280,504.53x = 54,141,352,870.07 - Step 5: Solve for x
x = 54,141,352,870.07/280,504.53 - Step 6: Final answer
x = 193,014.18
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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.