Finding the Fourth Proportional to 252,352,823.20, 378,529,234.80 and 137,561,567.20
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Solution
The fourth proportional to 252,352,823.20, 378,529,234.80 and 137,561,567.20 is: 206,342,350.80
Step by Step Solution
- Step 1: Write the proportion equation
252,352,823.20 : 378,529,234.80 = 137,561,567.20 : x - Step 2: Convert to fraction form
252,352,823.20/378,529,234.80 = 137,561,567.20/x - Step 3: Cross multiply
252,352,823.20x = 378,529,234.80 × 137,561,567.20 - Step 4: Simplify right side
252,352,823.20x = 52,071,074,770,104,776 - Step 5: Solve for x
x = 52,071,074,770,104,776/252,352,823.20 - Step 6: Final answer
x = 206,342,350.80
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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.