Finding the Fourth Proportional to 303,438.40, 455,266.95 and 126,072.70
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Solution
The fourth proportional to 303,438.40, 455,266.95 and 126,072.70 is: 189,154.48
Step by Step Solution
- Step 1: Write the proportion equation
303,438.40 : 455,266.95 = 126,072.70 : x - Step 2: Convert to fraction form
303,438.40/455,266.95 = 126,072.70/x - Step 3: Cross multiply
303,438.40x = 455,266.95 × 126,072.70 - Step 4: Simplify right side
303,438.40x = 57,396,733,607.27 - Step 5: Solve for x
x = 57,396,733,607.27/303,438.40 - Step 6: Final answer
x = 189,154.48
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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.