Finding the Fourth Proportional to 392,433.13, 588,737.44 and 143,115.13
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Solution
The fourth proportional to 392,433.13, 588,737.44 and 143,115.13 is: 214,704.69
Step by Step Solution
- Step 1: Write the proportion equation
392,433.13 : 588,737.44 = 143,115.13 : x - Step 2: Convert to fraction form
392,433.13/588,737.44 = 143,115.13/x - Step 3: Cross multiply
392,433.13x = 588,737.44 × 143,115.13 - Step 4: Simplify right side
392,433.13x = 84,257,232,317.78 - Step 5: Solve for x
x = 84,257,232,317.78/392,433.13 - Step 6: Final answer
x = 214,704.69
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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.