Finding the Fourth Proportional to 209,436,228.87, 289,024,003.76 and 115,352,508.79
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Solution
The fourth proportional to 209,436,228.87, 289,024,003.76 and 115,352,508.79 is: 159,187,568.04
Step by Step Solution
- Step 1: Write the proportion equation
209,436,228.87 : 289,024,003.76 = 115,352,508.79 : x - Step 2: Convert to fraction form
209,436,228.87/289,024,003.76 = 115,352,508.79/x - Step 3: Cross multiply
209,436,228.87x = 289,024,003.76 × 115,352,508.79 - Step 4: Simplify right side
209,436,228.87x = 33,339,643,934,246,392 - Step 5: Solve for x
x = 33,339,643,934,246,392/209,436,228.87 - Step 6: Final answer
x = 159,187,568.04
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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.