Finding the Fourth Proportional to 319,721.37, 479,478.22 and 106,431.99
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Solution
The fourth proportional to 319,721.37, 479,478.22 and 106,431.99 is: 159,613.41
Step by Step Solution
- Step 1: Write the proportion equation
319,721.37 : 479,478.22 = 106,431.99 : x - Step 2: Convert to fraction form
319,721.37/479,478.22 = 106,431.99/x - Step 3: Cross multiply
319,721.37x = 479,478.22 × 106,431.99 - Step 4: Simplify right side
319,721.37x = 51,031,818,452.79 - Step 5: Solve for x
x = 51,031,818,452.79/319,721.37 - Step 6: Final answer
x = 159,613.41
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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.