Finding the Fourth Proportional to 395,408.20, 592,989.63 and 142,655.84
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Solution
The fourth proportional to 395,408.20, 592,989.63 and 142,655.84 is: 213,939.50
Step by Step Solution
- Step 1: Write the proportion equation
395,408.20 : 592,989.63 = 142,655.84 : x - Step 2: Convert to fraction form
395,408.20/592,989.63 = 142,655.84/x - Step 3: Cross multiply
395,408.20x = 592,989.63 × 142,655.84 - Step 4: Simplify right side
395,408.20x = 84,593,431,348.95 - Step 5: Solve for x
x = 84,593,431,348.95/395,408.20 - Step 6: Final answer
x = 213,939.50
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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.