Finding the Fourth Proportional to 256,311.78, 353,709.99 and 143,134.62
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Solution
The fourth proportional to 256,311.78, 353,709.99 and 143,134.62 is: 197,525.63
Step by Step Solution
- Step 1: Write the proportion equation
256,311.78 : 353,709.99 = 143,134.62 : x - Step 2: Convert to fraction form
256,311.78/353,709.99 = 143,134.62/x - Step 3: Cross multiply
256,311.78x = 353,709.99 × 143,134.62 - Step 4: Simplify right side
256,311.78x = 50,628,145,008.85 - Step 5: Solve for x
x = 50,628,145,008.85/256,311.78 - Step 6: Final answer
x = 197,525.63
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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.