Finding the Fourth Proportional to 461,115.90, 691,615.53 and 145,604.70
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Solution
The fourth proportional to 461,115.90, 691,615.53 and 145,604.70 is: 218,388.63
Step by Step Solution
- Step 1: Write the proportion equation
461,115.90 : 691,615.53 = 145,604.70 : x - Step 2: Convert to fraction form
461,115.90/691,615.53 = 145,604.70/x - Step 3: Cross multiply
461,115.90x = 691,615.53 × 145,604.70 - Step 4: Simplify right side
461,115.90x = 100,702,471,760.99 - Step 5: Solve for x
x = 100,702,471,760.99/461,115.90 - Step 6: Final answer
x = 218,388.63
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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.