Finding the Fourth Proportional to 409,438,131.80, 614,157,197.70 and 133,088,811.80
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Solution
The fourth proportional to 409,438,131.80, 614,157,197.70 and 133,088,811.80 is: 199,633,217.70
Step by Step Solution
- Step 1: Write the proportion equation
409,438,131.80 : 614,157,197.70 = 133,088,811.80 : x - Step 2: Convert to fraction form
409,438,131.80/614,157,197.70 = 133,088,811.80/x - Step 3: Cross multiply
409,438,131.80x = 614,157,197.70 × 133,088,811.80 - Step 4: Simplify right side
409,438,131.80x = 81,737,451,700,310,704 - Step 5: Solve for x
x = 81,737,451,700,310,704/409,438,131.80 - Step 6: Final answer
x = 199,633,217.70
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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.