Finding the Fourth Proportional to 406,378.53, 609,596.99 and 140,135.20
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Solution
The fourth proportional to 406,378.53, 609,596.99 and 140,135.20 is: 210,212.87
Step by Step Solution
- Step 1: Write the proportion equation
406,378.53 : 609,596.99 = 140,135.20 : x - Step 2: Convert to fraction form
406,378.53/609,596.99 = 140,135.20/x - Step 3: Cross multiply
406,378.53x = 609,596.99 × 140,135.20 - Step 4: Simplify right side
406,378.53x = 85,425,996,113.05 - Step 5: Solve for x
x = 85,425,996,113.05/406,378.53 - Step 6: Final answer
x = 210,212.87
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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.