Finding the Fourth Proportional to 319,988.76, 479,821.80 and 106,680.96
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Solution
The fourth proportional to 319,988.76, 479,821.80 and 106,680.96 is: 159,967.65
Step by Step Solution
- Step 1: Write the proportion equation
319,988.76 : 479,821.80 = 106,680.96 : x - Step 2: Convert to fraction form
319,988.76/479,821.80 = 106,680.96/x - Step 3: Cross multiply
319,988.76x = 479,821.80 × 106,680.96 - Step 4: Simplify right side
319,988.76x = 51,187,850,252.93 - Step 5: Solve for x
x = 51,187,850,252.93/319,988.76 - Step 6: Final answer
x = 159,967.65
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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.