Finding the Fourth Proportional to 212,343.36, 318,512.16 and 72,199.68
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Solution
The fourth proportional to 212,343.36, 318,512.16 and 72,199.68 is: 108,298.54
Step by Step Solution
- Step 1: Write the proportion equation
212,343.36 : 318,512.16 = 72,199.68 : x - Step 2: Convert to fraction form
212,343.36/318,512.16 = 72,199.68/x - Step 3: Cross multiply
212,343.36x = 318,512.16 × 72,199.68 - Step 4: Simplify right side
212,343.36x = 22,996,476,028.11 - Step 5: Solve for x
x = 22,996,476,028.11/212,343.36 - Step 6: Final answer
x = 108,298.54
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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.