Finding the Fourth Proportional to 221,423,909.40, 332,135,864.10 and 85,113,739.80
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Solution
The fourth proportional to 221,423,909.40, 332,135,864.10 and 85,113,739.80 is: 127,670,609.70
Step by Step Solution
- Step 1: Write the proportion equation
221,423,909.40 : 332,135,864.10 = 85,113,739.80 : x - Step 2: Convert to fraction form
221,423,909.40/332,135,864.10 = 85,113,739.80/x - Step 3: Cross multiply
221,423,909.40x = 332,135,864.10 × 85,113,739.80 - Step 4: Simplify right side
221,423,909.40x = 28,269,325,515,255,564 - Step 5: Solve for x
x = 28,269,325,515,255,564/221,423,909.40 - Step 6: Final answer
x = 127,670,609.70
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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.