Finding the Fourth Proportional to 221,420,010.20, 332,130,015.30 and 106,376,811.80
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Solution
The fourth proportional to 221,420,010.20, 332,130,015.30 and 106,376,811.80 is: 159,565,217.70
Step by Step Solution
- Step 1: Write the proportion equation
221,420,010.20 : 332,130,015.30 = 106,376,811.80 : x - Step 2: Convert to fraction form
221,420,010.20/332,130,015.30 = 106,376,811.80/x - Step 3: Cross multiply
221,420,010.20x = 332,130,015.30 × 106,376,811.80 - Step 4: Simplify right side
221,420,010.20x = 35,330,932,130,699,220 - Step 5: Solve for x
x = 35,330,932,130,699,220/221,420,010.20 - Step 6: Final answer
x = 159,565,217.70
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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.