Finding the Fourth Proportional to 256,409,037, 353,844,782.10 and 138,934,276.38
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Solution
The fourth proportional to 256,409,037, 353,844,782.10 and 138,934,276.38 is: 191,729,469.94
Step by Step Solution
- Step 1: Write the proportion equation
256,409,037 : 353,844,782.10 = 138,934,276.38 : x - Step 2: Convert to fraction form
256,409,037/353,844,782.10 = 138,934,276.38/x - Step 3: Cross multiply
256,409,037x = 353,844,782.10 × 138,934,276.38 - Step 4: Simplify right side
256,409,037x = 49,161,168,751,902,280 - Step 5: Solve for x
x = 49,161,168,751,902,280/256,409,037 - Step 6: Final answer
x = 191,729,469.94
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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.