Finding the Fourth Proportional to 354,447.99, 488,861.76 and 227,135.43
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Solution
The fourth proportional to 354,447.99, 488,861.76 and 227,135.43 is: 313,269.73
Step by Step Solution
- Step 1: Write the proportion equation
354,447.99 : 488,861.76 = 227,135.43 : x - Step 2: Convert to fraction form
354,447.99/488,861.76 = 227,135.43/x - Step 3: Cross multiply
354,447.99x = 488,861.76 × 227,135.43 - Step 4: Simplify right side
354,447.99x = 111,037,823,623.85 - Step 5: Solve for x
x = 111,037,823,623.85/354,447.99 - Step 6: Final answer
x = 313,269.73
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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.