Finding the Fourth Proportional to 857,833.20, 1,286,749.80 and 218,135.70
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Solution
The fourth proportional to 857,833.20, 1,286,749.80 and 218,135.70 is: 327,203.55
Step by Step Solution
- Step 1: Write the proportion equation
857,833.20 : 1,286,749.80 = 218,135.70 : x - Step 2: Convert to fraction form
857,833.20/1,286,749.80 = 218,135.70/x - Step 3: Cross multiply
857,833.20x = 1,286,749.80 × 218,135.70 - Step 4: Simplify right side
857,833.20x = 280,686,068,347.86 - Step 5: Solve for x
x = 280,686,068,347.86/857,833.20 - Step 6: Final answer
x = 327,203.55
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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.