Finding the Fourth Proportional to 431,935.02, 647,902.60 and 221,438.70
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Solution
The fourth proportional to 431,935.02, 647,902.60 and 221,438.70 is: 332,158.09
Step by Step Solution
- Step 1: Write the proportion equation
431,935.02 : 647,902.60 = 221,438.70 : x - Step 2: Convert to fraction form
431,935.02/647,902.60 = 221,438.70/x - Step 3: Cross multiply
431,935.02x = 647,902.60 × 221,438.70 - Step 4: Simplify right side
431,935.02x = 143,470,709,470.62 - Step 5: Solve for x
x = 143,470,709,470.62/431,935.02 - Step 6: Final answer
x = 332,158.09
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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.