Finding the Fourth Proportional to 220,818.84, 331,012.26 and 87,654.84
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Solution
The fourth proportional to 220,818.84, 331,012.26 and 87,654.84 is: 131,396.52
Step by Step Solution
- Step 1: Write the proportion equation
220,818.84 : 331,012.26 = 87,654.84 : x - Step 2: Convert to fraction form
220,818.84/331,012.26 = 87,654.84/x - Step 3: Cross multiply
220,818.84x = 331,012.26 × 87,654.84 - Step 4: Simplify right side
220,818.84x = 29,014,826,688.34 - Step 5: Solve for x
x = 29,014,826,688.34/220,818.84 - Step 6: Final answer
x = 131,396.52
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1.5x scale
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.