Finding the Fourth Proportional to 426,108.70, 639,163.05 and 268,515.10
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Solution
The fourth proportional to 426,108.70, 639,163.05 and 268,515.10 is: 402,772.65
Step by Step Solution
- Step 1: Write the proportion equation
426,108.70 : 639,163.05 = 268,515.10 : x - Step 2: Convert to fraction form
426,108.70/639,163.05 = 268,515.10/x - Step 3: Cross multiply
426,108.70x = 639,163.05 × 268,515.10 - Step 4: Simplify right side
426,108.70x = 171,624,930,287.06 - Step 5: Solve for x
x = 171,624,930,287.06/426,108.70 - Step 6: Final answer
x = 402,772.65
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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.