Finding the Fourth Proportional to 256,109.81, 353,422.25 and 141,385.99
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Solution
The fourth proportional to 256,109.81, 353,422.25 and 141,385.99 is: 195,107.54
Step by Step Solution
- Step 1: Write the proportion equation
256,109.81 : 353,422.25 = 141,385.99 : x - Step 2: Convert to fraction form
256,109.81/353,422.25 = 141,385.99/x - Step 3: Cross multiply
256,109.81x = 353,422.25 × 141,385.99 - Step 4: Simplify right side
256,109.81x = 49,968,952,937.17 - Step 5: Solve for x
x = 49,968,952,937.17/256,109.81 - Step 6: Final answer
x = 195,107.54
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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.