Finding the Fourth Proportional to 207,348,857.40, 311,023,286.10 and 125,985,240.30
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Solution
The fourth proportional to 207,348,857.40, 311,023,286.10 and 125,985,240.30 is: 188,977,860.45
Step by Step Solution
- Step 1: Write the proportion equation
207,348,857.40 : 311,023,286.10 = 125,985,240.30 : x - Step 2: Convert to fraction form
207,348,857.40/311,023,286.10 = 125,985,240.30/x - Step 3: Cross multiply
207,348,857.40x = 311,023,286.10 × 125,985,240.30 - Step 4: Simplify right side
207,348,857.40x = 39,184,343,438,204,152 - Step 5: Solve for x
x = 39,184,343,438,204,152/207,348,857.40 - Step 6: Final answer
x = 188,977,860.45
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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.