Finding the Fourth Proportional to 221,971,706.88, 306,321,610.86 and 122,859,338.19
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Solution
The fourth proportional to 221,971,706.88, 306,321,610.86 and 122,859,338.19 is: 169,546,249.44
Step by Step Solution
- Step 1: Write the proportion equation
221,971,706.88 : 306,321,610.86 = 122,859,338.19 : x - Step 2: Convert to fraction form
221,971,706.88/306,321,610.86 = 122,859,338.19/x - Step 3: Cross multiply
221,971,706.88x = 306,321,610.86 × 122,859,338.19 - Step 4: Simplify right side
221,971,706.88x = 37,634,470,383,554,320 - Step 5: Solve for x
x = 37,634,470,383,554,320/221,971,706.88 - Step 6: Final answer
x = 169,546,249.44
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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.