Finding the Fourth Proportional to 285,699.09, 428,414.35 and 105,660.21
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Solution
The fourth proportional to 285,699.09, 428,414.35 and 105,660.21 is: 158,440.65
Step by Step Solution
- Step 1: Write the proportion equation
285,699.09 : 428,414.35 = 105,660.21 : x - Step 2: Convert to fraction form
285,699.09/428,414.35 = 105,660.21/x - Step 3: Cross multiply
285,699.09x = 428,414.35 × 105,660.21 - Step 4: Simplify right side
285,699.09x = 45,266,350,188.01 - Step 5: Solve for x
x = 45,266,350,188.01/285,699.09 - Step 6: Final answer
x = 158,440.65
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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.