Finding the Fourth Proportional to 221,274,138.80, 331,911,208.20 and 209,936,730.80
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Solution
The fourth proportional to 221,274,138.80, 331,911,208.20 and 209,936,730.80 is: 314,905,096.20
Step by Step Solution
- Step 1: Write the proportion equation
221,274,138.80 : 331,911,208.20 = 209,936,730.80 : x - Step 2: Convert to fraction form
221,274,138.80/331,911,208.20 = 209,936,730.80/x - Step 3: Cross multiply
221,274,138.80x = 331,911,208.20 × 209,936,730.80 - Step 4: Simplify right side
221,274,138.80x = 69,680,353,965,386,152 - Step 5: Solve for x
x = 69,680,353,965,386,152/221,274,138.80 - Step 6: Final answer
x = 314,905,096.20
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1.5x scale
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.