Finding the Fourth Proportional to 239,855,442.99, 331,000,622.24 and 129,847,156.11
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Solution
The fourth proportional to 239,855,442.99, 331,000,622.24 and 129,847,156.11 is: 179,189,135.47
Step by Step Solution
- Step 1: Write the proportion equation
239,855,442.99 : 331,000,622.24 = 129,847,156.11 : x - Step 2: Convert to fraction form
239,855,442.99/331,000,622.24 = 129,847,156.11/x - Step 3: Cross multiply
239,855,442.99x = 331,000,622.24 × 129,847,156.11 - Step 4: Simplify right side
239,855,442.99x = 42,979,489,467,855,184 - Step 5: Solve for x
x = 42,979,489,467,855,184/239,855,442.99 - Step 6: Final answer
x = 179,189,135.47
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.