Finding the Fourth Proportional to 257,905.14, 386,733.28 and 108,105.20
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Solution
The fourth proportional to 257,905.14, 386,733.28 and 108,105.20 is: 162,105.65
Step by Step Solution
- Step 1: Write the proportion equation
257,905.14 : 386,733.28 = 108,105.20 : x - Step 2: Convert to fraction form
257,905.14/386,733.28 = 108,105.20/x - Step 3: Cross multiply
257,905.14x = 386,733.28 × 108,105.20 - Step 4: Simplify right side
257,905.14x = 41,807,879,651.43 - Step 5: Solve for x
x = 41,807,879,651.43/257,905.14 - Step 6: Final answer
x = 162,105.65
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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.