Finding the Fourth Proportional to 257,145.27, 354,861.49 and 149,789.09
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Solution
The fourth proportional to 257,145.27, 354,861.49 and 149,789.09 is: 206,709.54
Step by Step Solution
- Step 1: Write the proportion equation
257,145.27 : 354,861.49 = 149,789.09 : x - Step 2: Convert to fraction form
257,145.27/354,861.49 = 149,789.09/x - Step 3: Cross multiply
257,145.27x = 354,861.49 × 149,789.09 - Step 4: Simplify right side
257,145.27x = 53,154,379,663.14 - Step 5: Solve for x
x = 53,154,379,663.14/257,145.27 - Step 6: Final answer
x = 206,709.54
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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.