Finding the Fourth Proportional to 386,380.80, 533,219.36 and 225,209.84
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Solution
The fourth proportional to 386,380.80, 533,219.36 and 225,209.84 is: 310,797.65
Step by Step Solution
- Step 1: Write the proportion equation
386,380.80 : 533,219.36 = 225,209.84 : x - Step 2: Convert to fraction form
386,380.80/533,219.36 = 225,209.84/x - Step 3: Cross multiply
386,380.80x = 533,219.36 × 225,209.84 - Step 4: Simplify right side
386,380.80x = 120,086,242,958.36 - Step 5: Solve for x
x = 120,086,242,958.36/386,380.80 - Step 6: Final answer
x = 310,797.65
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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.