Finding the Fourth Proportional to 213,716,893.80, 320,575,340.70 and 145,692,445.80
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Solution
The fourth proportional to 213,716,893.80, 320,575,340.70 and 145,692,445.80 is: 218,538,668.70
Step by Step Solution
- Step 1: Write the proportion equation
213,716,893.80 : 320,575,340.70 = 145,692,445.80 : x - Step 2: Convert to fraction form
213,716,893.80/320,575,340.70 = 145,692,445.80/x - Step 3: Cross multiply
213,716,893.80x = 320,575,340.70 × 145,692,445.80 - Step 4: Simplify right side
213,716,893.80x = 46,705,405,449,751,288 - Step 5: Solve for x
x = 46,705,405,449,751,288/213,716,893.80 - Step 6: Final answer
x = 218,538,668.70
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1.5x scale
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.