Finding the Fourth Proportional to 431,594.20, 647,585.70 and 206,867.80
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Solution
The fourth proportional to 431,594.20, 647,585.70 and 206,867.80 is: 310,394.88
Step by Step Solution
- Step 1: Write the proportion equation
431,594.20 : 647,585.70 = 206,867.80 : x - Step 2: Convert to fraction form
431,594.20/647,585.70 = 206,867.80/x - Step 3: Cross multiply
431,594.20x = 647,585.70 × 206,867.80 - Step 4: Simplify right side
431,594.20x = 133,964,629,070.46 - Step 5: Solve for x
x = 133,964,629,070.46/431,594.20 - Step 6: Final answer
x = 310,394.88
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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.