Finding the Fourth Proportional to 857,197.18, 1,285,793.21 and 217,499.68
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Solution
The fourth proportional to 857,197.18, 1,285,793.21 and 217,499.68 is: 326,248.87
Step by Step Solution
- Step 1: Write the proportion equation
857,197.18 : 1,285,793.21 = 217,499.68 : x - Step 2: Convert to fraction form
857,197.18/1,285,793.21 = 217,499.68/x - Step 3: Cross multiply
857,197.18x = 1,285,793.21 × 217,499.68 - Step 4: Simplify right side
857,197.18x = 279,659,611,721.17 - Step 5: Solve for x
x = 279,659,611,721.17/857,197.18 - Step 6: Final answer
x = 326,248.87
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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.