Finding the Fourth Proportional to 392,013.24, 588,158.10 and 142,720.44
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Solution
The fourth proportional to 392,013.24, 588,158.10 and 142,720.44 is: 214,130.99
Step by Step Solution
- Step 1: Write the proportion equation
392,013.24 : 588,158.10 = 142,720.44 : x - Step 2: Convert to fraction form
392,013.24/588,158.10 = 142,720.44/x - Step 3: Cross multiply
392,013.24x = 588,158.10 × 142,720.44 - Step 4: Simplify right side
392,013.24x = 83,942,182,821.56 - Step 5: Solve for x
x = 83,942,182,821.56/392,013.24 - Step 6: Final answer
x = 214,130.99
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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.