Finding the Fourth Proportional to 352,512,861.20, 528,769,291.80 and 214,560,400.40
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Solution
The fourth proportional to 352,512,861.20, 528,769,291.80 and 214,560,400.40 is: 321,840,600.60
Step by Step Solution
- Step 1: Write the proportion equation
352,512,861.20 : 528,769,291.80 = 214,560,400.40 : x - Step 2: Convert to fraction form
352,512,861.20/528,769,291.80 = 214,560,400.40/x - Step 3: Cross multiply
352,512,861.20x = 528,769,291.80 × 214,560,400.40 - Step 4: Simplify right side
352,512,861.20x = 113,452,950,967,832,448 - Step 5: Solve for x
x = 113,452,950,967,832,448/352,512,861.20 - Step 6: Final answer
x = 321,840,600.60
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.