Finding the Fourth Proportional to 239,629.80, 359,444.70 and 81,805.80
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Solution
The fourth proportional to 239,629.80, 359,444.70 and 81,805.80 is: 122,708.70
Step by Step Solution
- Step 1: Write the proportion equation
239,629.80 : 359,444.70 = 81,805.80 : x - Step 2: Convert to fraction form
239,629.80/359,444.70 = 81,805.80/x - Step 3: Cross multiply
239,629.80x = 359,444.70 × 81,805.80 - Step 4: Simplify right side
239,629.80x = 29,404,661,239.26 - Step 5: Solve for x
x = 29,404,661,239.26/239,629.80 - Step 6: Final answer
x = 122,708.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.