Finding the Fourth Proportional to 212,416.74, 318,822.21 and 107,309.52
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Solution
The fourth proportional to 212,416.74, 318,822.21 and 107,309.52 is: 161,063.85
Step by Step Solution
- Step 1: Write the proportion equation
212,416.74 : 318,822.21 = 107,309.52 : x - Step 2: Convert to fraction form
212,416.74/318,822.21 = 107,309.52/x - Step 3: Cross multiply
212,416.74x = 318,822.21 × 107,309.52 - Step 4: Simplify right side
212,416.74x = 34,212,658,320.44 - Step 5: Solve for x
x = 34,212,658,320.44/212,416.74 - Step 6: Final answer
x = 161,063.85
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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.