Finding the Fourth Proportional to 431,574.10, 646,775.30 and 229,119.05
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Solution
The fourth proportional to 431,574.10, 646,775.30 and 229,119.05 is: 343,367.56
Step by Step Solution
- Step 1: Write the proportion equation
431,574.10 : 646,775.30 = 229,119.05 : x - Step 2: Convert to fraction form
431,574.10/646,775.30 = 229,119.05/x - Step 3: Cross multiply
431,574.10x = 646,775.30 × 229,119.05 - Step 4: Simplify right side
431,574.10x = 148,188,544,489.20 - Step 5: Solve for x
x = 148,188,544,489.20/431,574.10 - Step 6: Final answer
x = 343,367.56
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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.