Finding the Fourth Proportional to 317,235.10, 437,889.12 and 283,604.85
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Solution
The fourth proportional to 317,235.10, 437,889.12 and 283,604.85 is: 391,468.28
Step by Step Solution
- Step 1: Write the proportion equation
317,235.10 : 437,889.12 = 283,604.85 : x - Step 2: Convert to fraction form
317,235.10/437,889.12 = 283,604.85/x - Step 3: Cross multiply
317,235.10x = 437,889.12 × 283,604.85 - Step 4: Simplify right side
317,235.10x = 124,187,478,725.99 - Step 5: Solve for x
x = 124,187,478,725.99/317,235.10 - Step 6: Final answer
x = 391,468.28
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.