Finding the Fourth Proportional to 381,626.80, 571,950.60 and 213,146.80
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Solution
The fourth proportional to 381,626.80, 571,950.60 and 213,146.80 is: 319,446.75
Step by Step Solution
- Step 1: Write the proportion equation
381,626.80 : 571,950.60 = 213,146.80 : x - Step 2: Convert to fraction form
381,626.80/571,950.60 = 213,146.80/x - Step 3: Cross multiply
381,626.80x = 571,950.60 × 213,146.80 - Step 4: Simplify right side
381,626.80x = 121,909,440,148.08 - Step 5: Solve for x
x = 121,909,440,148.08/381,626.80 - Step 6: Final answer
x = 319,446.75
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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.