Finding the Fourth Proportional to 278,911.09, 384,897.35 and 151,586.68
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Solution
The fourth proportional to 278,911.09, 384,897.35 and 151,586.68 is: 209,189.64
Step by Step Solution
- Step 1: Write the proportion equation
278,911.09 : 384,897.35 = 151,586.68 : x - Step 2: Convert to fraction form
278,911.09/384,897.35 = 151,586.68/x - Step 3: Cross multiply
278,911.09x = 384,897.35 × 151,586.68 - Step 4: Simplify right side
278,911.09x = 58,345,311,427.30 - Step 5: Solve for x
x = 58,345,311,427.30/278,911.09 - Step 6: Final answer
x = 209,189.64
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.