Finding the Fourth Proportional to 278,234.99, 417,369.84 and 78,570.69
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Solution
The fourth proportional to 278,234.99, 417,369.84 and 78,570.69 is: 117,860.94
Step by Step Solution
- Step 1: Write the proportion equation
278,234.99 : 417,369.84 = 78,570.69 : x - Step 2: Convert to fraction form
278,234.99/417,369.84 = 78,570.69/x - Step 3: Cross multiply
278,234.99x = 417,369.84 × 78,570.69 - Step 4: Simplify right side
278,234.99x = 32,793,036,313.99 - Step 5: Solve for x
x = 32,793,036,313.99/278,234.99 - Step 6: Final answer
x = 117,860.94
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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.