Finding the Fourth Proportional to 493,806.20, 681,202.16 and 312,212.30
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Solution
The fourth proportional to 493,806.20, 681,202.16 and 312,212.30 is: 430,694.66
Step by Step Solution
- Step 1: Write the proportion equation
493,806.20 : 681,202.16 = 312,212.30 : x - Step 2: Convert to fraction form
493,806.20/681,202.16 = 312,212.30/x - Step 3: Cross multiply
493,806.20x = 681,202.16 × 312,212.30 - Step 4: Simplify right side
493,806.20x = 212,679,693,138.57 - Step 5: Solve for x
x = 212,679,693,138.57/493,806.20 - Step 6: Final answer
x = 430,694.66
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.