Finding the Fourth Proportional to 256,056.34, 353,368.84 and 142,879.09
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Solution
The fourth proportional to 256,056.34, 353,368.84 and 142,879.09 is: 197,179.33
Step by Step Solution
- Step 1: Write the proportion equation
256,056.34 : 353,368.84 = 142,879.09 : x - Step 2: Convert to fraction form
256,056.34/353,368.84 = 142,879.09/x - Step 3: Cross multiply
256,056.34x = 353,368.84 × 142,879.09 - Step 4: Simplify right side
256,056.34x = 50,489,018,293.56 - Step 5: Solve for x
x = 50,489,018,293.56/256,056.34 - Step 6: Final answer
x = 197,179.33
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1.5x scale
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.