Finding the Fourth Proportional to 319,913.62, 479,821.21 and 106,685.26
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Solution
The fourth proportional to 319,913.62, 479,821.21 and 106,685.26 is: 160,011.48
Step by Step Solution
- Step 1: Write the proportion equation
319,913.62 : 479,821.21 = 106,685.26 : x - Step 2: Convert to fraction form
319,913.62/479,821.21 = 106,685.26/x - Step 3: Cross multiply
319,913.62x = 479,821.21 × 106,685.26 - Step 4: Simplify right side
319,913.62x = 51,189,850,542.36 - Step 5: Solve for x
x = 51,189,850,542.36/319,913.62 - Step 6: Final answer
x = 160,011.48
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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.