Finding the Fourth Proportional to 818,143.20, 1,227,283.92 and 257,338.08
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Solution
The fourth proportional to 818,143.20, 1,227,283.92 and 257,338.08 is: 386,028.86
Step by Step Solution
- Step 1: Write the proportion equation
818,143.20 : 1,227,283.92 = 257,338.08 : x - Step 2: Convert to fraction form
818,143.20/1,227,283.92 = 257,338.08/x - Step 3: Cross multiply
818,143.20x = 1,227,283.92 × 257,338.08 - Step 4: Simplify right side
818,143.20x = 315,826,887,587.67 - Step 5: Solve for x
x = 315,826,887,587.67/818,143.20 - Step 6: Final answer
x = 386,028.86
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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.