Finding the Fourth Proportional to 207,079.20, 310,618.80 and 74,023.20
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Solution
The fourth proportional to 207,079.20, 310,618.80 and 74,023.20 is: 111,034.80
Step by Step Solution
- Step 1: Write the proportion equation
207,079.20 : 310,618.80 = 74,023.20 : x - Step 2: Convert to fraction form
207,079.20/310,618.80 = 74,023.20/x - Step 3: Cross multiply
207,079.20x = 310,618.80 × 74,023.20 - Step 4: Simplify right side
207,079.20x = 22,992,997,556.16 - Step 5: Solve for x
x = 22,992,997,556.16/207,079.20 - Step 6: Final answer
x = 111,034.80
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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.