Finding the Fourth Proportional to 391,194.24, 539,861.34 and 219,119.60
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Solution
The fourth proportional to 391,194.24, 539,861.34 and 219,119.60 is: 302,392.48
Step by Step Solution
- Step 1: Write the proportion equation
391,194.24 : 539,861.34 = 219,119.60 : x - Step 2: Convert to fraction form
391,194.24/539,861.34 = 219,119.60/x - Step 3: Cross multiply
391,194.24x = 539,861.34 × 219,119.60 - Step 4: Simplify right side
391,194.24x = 118,294,198,176.96 - Step 5: Solve for x
x = 118,294,198,176.96/391,194.24 - Step 6: Final answer
x = 302,392.48
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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.