Finding the Fourth Proportional to 414,221.76, 621,340.20 and 129,905.96
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Solution
The fourth proportional to 414,221.76, 621,340.20 and 129,905.96 is: 194,861.31
Step by Step Solution
- Step 1: Write the proportion equation
414,221.76 : 621,340.20 = 129,905.96 : x - Step 2: Convert to fraction form
414,221.76/621,340.20 = 129,905.96/x - Step 3: Cross multiply
414,221.76x = 621,340.20 × 129,905.96 - Step 4: Simplify right side
414,221.76x = 80,715,795,167.59 - Step 5: Solve for x
x = 80,715,795,167.59/414,221.76 - Step 6: Final answer
x = 194,861.31
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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.