Finding the Fourth Proportional to 280,902,475.80, 421,353,713.70 and 246,890,251.80
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Solution
The fourth proportional to 280,902,475.80, 421,353,713.70 and 246,890,251.80 is: 370,335,377.70
Step by Step Solution
- Step 1: Write the proportion equation
280,902,475.80 : 421,353,713.70 = 246,890,251.80 : x - Step 2: Convert to fraction form
280,902,475.80/421,353,713.70 = 246,890,251.80/x - Step 3: Cross multiply
280,902,475.80x = 421,353,713.70 × 246,890,251.80 - Step 4: Simplify right side
280,902,475.80x = 104,028,124,472,258,112 - Step 5: Solve for x
x = 104,028,124,472,258,112/280,902,475.80 - Step 6: Final answer
x = 370,335,377.70
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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.