Finding the Fourth Proportional to 231,863,995.20, 347,795,992.80 and 220,526,587.20
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Solution
The fourth proportional to 231,863,995.20, 347,795,992.80 and 220,526,587.20 is: 330,789,880.80
Step by Step Solution
- Step 1: Write the proportion equation
231,863,995.20 : 347,795,992.80 = 220,526,587.20 : x - Step 2: Convert to fraction form
231,863,995.20/347,795,992.80 = 220,526,587.20/x - Step 3: Cross multiply
231,863,995.20x = 347,795,992.80 × 220,526,587.20 - Step 4: Simplify right side
231,863,995.20x = 76,698,263,334,019,776 - Step 5: Solve for x
x = 76,698,263,334,019,776/231,863,995.20 - Step 6: Final answer
x = 330,789,880.80
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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.