Finding the Fourth Proportional to 318,311.60, 439,122.75 and 190,765.76
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Solution
The fourth proportional to 318,311.60, 439,122.75 and 190,765.76 is: 263,168.50
Step by Step Solution
- Step 1: Write the proportion equation
318,311.60 : 439,122.75 = 190,765.76 : x - Step 2: Convert to fraction form
318,311.60/439,122.75 = 190,765.76/x - Step 3: Cross multiply
318,311.60x = 439,122.75 × 190,765.76 - Step 4: Simplify right side
318,311.60x = 83,769,585,137.04 - Step 5: Solve for x
x = 83,769,585,137.04/318,311.60 - Step 6: Final answer
x = 263,168.50
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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.