Finding the Fourth Proportional to 265,787,647.80, 398,681,471.70 and 212,039,935.80
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Solution
The fourth proportional to 265,787,647.80, 398,681,471.70 and 212,039,935.80 is: 318,059,903.70
Step by Step Solution
- Step 1: Write the proportion equation
265,787,647.80 : 398,681,471.70 = 212,039,935.80 : x - Step 2: Convert to fraction form
265,787,647.80/398,681,471.70 = 212,039,935.80/x - Step 3: Cross multiply
265,787,647.80x = 398,681,471.70 × 212,039,935.80 - Step 4: Simplify right side
265,787,647.80x = 84,536,393,663,917,520 - Step 5: Solve for x
x = 84,536,393,663,917,520/265,787,647.80 - Step 6: Final answer
x = 318,059,903.70
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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.