Finding the Fourth Proportional to 421,202.80, 631,804.20 and 168,604.30
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Solution
The fourth proportional to 421,202.80, 631,804.20 and 168,604.30 is: 252,906.45
Step by Step Solution
- Step 1: Write the proportion equation
421,202.80 : 631,804.20 = 168,604.30 : x - Step 2: Convert to fraction form
421,202.80/631,804.20 = 168,604.30/x - Step 3: Cross multiply
421,202.80x = 631,804.20 × 168,604.30 - Step 4: Simplify right side
421,202.80x = 106,524,904,878.06 - Step 5: Solve for x
x = 106,524,904,878.06/421,202.80 - Step 6: Final answer
x = 252,906.45
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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.