Finding the Fourth Proportional to 289,656,812.10, 434,485,218.15 and 257,912,069.70
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Solution
The fourth proportional to 289,656,812.10, 434,485,218.15 and 257,912,069.70 is: 386,868,104.55
Step by Step Solution
- Step 1: Write the proportion equation
289,656,812.10 : 434,485,218.15 = 257,912,069.70 : x - Step 2: Convert to fraction form
289,656,812.10/434,485,218.15 = 257,912,069.70/x - Step 3: Cross multiply
289,656,812.10x = 434,485,218.15 × 257,912,069.70 - Step 4: Simplify right side
289,656,812.10x = 112,058,981,867,122,496 - Step 5: Solve for x
x = 112,058,981,867,122,496/289,656,812.10 - Step 6: Final answer
x = 386,868,104.55
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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.