Finding the Fourth Proportional to 512,745.12, 769,244.56 and 213,135.84
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Solution
The fourth proportional to 512,745.12, 769,244.56 and 213,135.84 is: 319,756.50
Step by Step Solution
- Step 1: Write the proportion equation
512,745.12 : 769,244.56 = 213,135.84 : x - Step 2: Convert to fraction form
512,745.12/769,244.56 = 213,135.84/x - Step 3: Cross multiply
512,745.12x = 769,244.56 × 213,135.84 - Step 4: Simplify right side
512,745.12x = 163,953,585,461.03 - Step 5: Solve for x
x = 163,953,585,461.03/512,745.12 - Step 6: Final answer
x = 319,756.50
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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.