Finding the Fourth Proportional to 258,861.83, 388,134.18 and 100,905.75
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Solution
The fourth proportional to 258,861.83, 388,134.18 and 100,905.75 is: 151,296.82
Step by Step Solution
- Step 1: Write the proportion equation
258,861.83 : 388,134.18 = 100,905.75 : x - Step 2: Convert to fraction form
258,861.83/388,134.18 = 100,905.75/x - Step 3: Cross multiply
258,861.83x = 388,134.18 × 100,905.75 - Step 4: Simplify right side
258,861.83x = 39,164,970,533.54 - Step 5: Solve for x
x = 39,164,970,533.54/258,861.83 - Step 6: Final answer
x = 151,296.82
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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.