Finding the Fourth Proportional to 307,810.80, 461,716.20 and 212,425.20
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Solution
The fourth proportional to 307,810.80, 461,716.20 and 212,425.20 is: 318,637.80
Step by Step Solution
- Step 1: Write the proportion equation
307,810.80 : 461,716.20 = 212,425.20 : x - Step 2: Convert to fraction form
307,810.80/461,716.20 = 212,425.20/x - Step 3: Cross multiply
307,810.80x = 461,716.20 × 212,425.20 - Step 4: Simplify right side
307,810.80x = 98,080,156,128.24 - Step 5: Solve for x
x = 98,080,156,128.24/307,810.80 - Step 6: Final answer
x = 318,637.80
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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.