Finding the Fourth Proportional to 378,449.21, 567,509.09 and 108,517.79
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Solution
The fourth proportional to 378,449.21, 567,509.09 and 108,517.79 is: 162,729.45
Step by Step Solution
- Step 1: Write the proportion equation
378,449.21 : 567,509.09 = 108,517.79 : x - Step 2: Convert to fraction form
378,449.21/567,509.09 = 108,517.79/x - Step 3: Cross multiply
378,449.21x = 567,509.09 × 108,517.79 - Step 4: Simplify right side
378,449.21x = 61,584,833,127.89 - Step 5: Solve for x
x = 61,584,833,127.89/378,449.21 - Step 6: Final answer
x = 162,729.45
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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.