Finding the Fourth Proportional to 212,808.55, 318,649.65 and 128,455.96
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Solution
The fourth proportional to 212,808.55, 318,649.65 and 128,455.96 is: 192,344.00
Step by Step Solution
- Step 1: Write the proportion equation
212,808.55 : 318,649.65 = 128,455.96 : x - Step 2: Convert to fraction form
212,808.55/318,649.65 = 128,455.96/x - Step 3: Cross multiply
212,808.55x = 318,649.65 × 128,455.96 - Step 4: Simplify right side
212,808.55x = 40,932,446,694.41 - Step 5: Solve for x
x = 40,932,446,694.41/212,808.55 - Step 6: Final answer
x = 192,344.00
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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.