Finding the Fourth Proportional to 345,217.80, 517,163.28 and 211,708.74
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Solution
The fourth proportional to 345,217.80, 517,163.28 and 211,708.74 is: 317,156.26
Step by Step Solution
- Step 1: Write the proportion equation
345,217.80 : 517,163.28 = 211,708.74 : x - Step 2: Convert to fraction form
345,217.80/517,163.28 = 211,708.74/x - Step 3: Cross multiply
345,217.80x = 517,163.28 × 211,708.74 - Step 4: Simplify right side
345,217.80x = 109,487,986,383.07 - Step 5: Solve for x
x = 109,487,986,383.07/345,217.80 - Step 6: Final answer
x = 317,156.26
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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.