Finding the Fourth Proportional to 293,419,246.80, 440,128,870.20 and 220,239,821.10
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Solution
The fourth proportional to 293,419,246.80, 440,128,870.20 and 220,239,821.10 is: 330,359,731.65
Step by Step Solution
- Step 1: Write the proportion equation
293,419,246.80 : 440,128,870.20 = 220,239,821.10 : x - Step 2: Convert to fraction form
293,419,246.80/440,128,870.20 = 220,239,821.10/x - Step 3: Cross multiply
293,419,246.80x = 440,128,870.20 × 220,239,821.10 - Step 4: Simplify right side
293,419,246.80x = 96,933,903,633,793,120 - Step 5: Solve for x
x = 96,933,903,633,793,120/293,419,246.80 - Step 6: Final answer
x = 330,359,731.65
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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.