Finding the Fourth Proportional to 586,138.80, 879,208.20 and 212,113.20
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Solution
The fourth proportional to 586,138.80, 879,208.20 and 212,113.20 is: 318,169.80
Step by Step Solution
- Step 1: Write the proportion equation
586,138.80 : 879,208.20 = 212,113.20 : x - Step 2: Convert to fraction form
586,138.80/879,208.20 = 212,113.20/x - Step 3: Cross multiply
586,138.80x = 879,208.20 × 212,113.20 - Step 4: Simplify right side
586,138.80x = 186,491,664,768.24 - Step 5: Solve for x
x = 186,491,664,768.24/586,138.80 - Step 6: Final answer
x = 318,169.80
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Similar ratio
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1.5x scale
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.