Finding the Fourth Proportional to 391,309.43, 586,869.68 and 163,481.95
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Solution
The fourth proportional to 391,309.43, 586,869.68 and 163,481.95 is: 245,183.45
Step by Step Solution
- Step 1: Write the proportion equation
391,309.43 : 586,869.68 = 163,481.95 : x - Step 2: Convert to fraction form
391,309.43/586,869.68 = 163,481.95/x - Step 3: Cross multiply
391,309.43x = 586,869.68 × 163,481.95 - Step 4: Simplify right side
391,309.43x = 95,942,595,930.52 - Step 5: Solve for x
x = 95,942,595,930.52/391,309.43 - Step 6: Final answer
x = 245,183.45
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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.