Finding the Fourth Proportional to 505,239.12, 697,229.88 and 278,884.56
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Solution
The fourth proportional to 505,239.12, 697,229.88 and 278,884.56 is: 384,860.63
Step by Step Solution
- Step 1: Write the proportion equation
505,239.12 : 697,229.88 = 278,884.56 : x - Step 2: Convert to fraction form
505,239.12/697,229.88 = 278,884.56/x - Step 3: Cross multiply
505,239.12x = 697,229.88 × 278,884.56 - Step 4: Simplify right side
505,239.12x = 194,446,648,302.65 - Step 5: Solve for x
x = 194,446,648,302.65/505,239.12 - Step 6: Final answer
x = 384,860.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.