Finding the Fourth Proportional to 256,625.47, 354,136.21 and 143,470.09
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Solution
The fourth proportional to 256,625.47, 354,136.21 and 143,470.09 is: 197,984.85
Step by Step Solution
- Step 1: Write the proportion equation
256,625.47 : 354,136.21 = 143,470.09 : x - Step 2: Convert to fraction form
256,625.47/354,136.21 = 143,470.09/x - Step 3: Cross multiply
256,625.47x = 354,136.21 × 143,470.09 - Step 4: Simplify right side
256,625.47x = 50,807,953,920.96 - Step 5: Solve for x
x = 50,807,953,920.96/256,625.47 - Step 6: Final answer
x = 197,984.85
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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.