Finding the Fourth Proportional to 213,716,471.80, 320,574,707.70 and 145,692,023.80
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Solution
The fourth proportional to 213,716,471.80, 320,574,707.70 and 145,692,023.80 is: 218,538,035.70
Step by Step Solution
- Step 1: Write the proportion equation
213,716,471.80 : 320,574,707.70 = 145,692,023.80 : x - Step 2: Convert to fraction form
213,716,471.80/320,574,707.70 = 145,692,023.80/x - Step 3: Cross multiply
213,716,471.80x = 320,574,707.70 × 145,692,023.80 - Step 4: Simplify right side
213,716,471.80x = 46,705,177,943,906,448 - Step 5: Solve for x
x = 46,705,177,943,906,448/213,716,471.80 - Step 6: Final answer
x = 218,538,035.70
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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.