Finding the Fourth Proportional to 381,014.22, 571,121.20 and 128,206.94
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Solution
The fourth proportional to 381,014.22, 571,121.20 and 128,206.94 is: 192,175.77
Step by Step Solution
- Step 1: Write the proportion equation
381,014.22 : 571,121.20 = 128,206.94 : x - Step 2: Convert to fraction form
381,014.22/571,121.20 = 128,206.94/x - Step 3: Cross multiply
381,014.22x = 571,121.20 × 128,206.94 - Step 4: Simplify right side
381,014.22x = 73,221,701,421.13 - Step 5: Solve for x
x = 73,221,701,421.13/381,014.22 - Step 6: Final answer
x = 192,175.77
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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.