Finding the Fourth Proportional to 197,207,639.40, 295,244,588.70 and 120,680,135.40
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Solution
The fourth proportional to 197,207,639.40, 295,244,588.70 and 120,680,135.40 is: 180,673,309.86
Step by Step Solution
- Step 1: Write the proportion equation
197,207,639.40 : 295,244,588.70 = 120,680,135.40 : x - Step 2: Convert to fraction form
197,207,639.40/295,244,588.70 = 120,680,135.40/x - Step 3: Cross multiply
197,207,639.40x = 295,244,588.70 × 120,680,135.40 - Step 4: Simplify right side
197,207,639.40x = 35,630,156,940,433,312 - Step 5: Solve for x
x = 35,630,156,940,433,312/197,207,639.40 - Step 6: Final answer
x = 180,673,309.86
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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.