Finding the Fourth Proportional to 221,708,621.59, 305,944,751.92 and 122,581,589.07
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Solution
The fourth proportional to 221,708,621.59, 305,944,751.92 and 122,581,589.07 is: 169,155,324.62
Step by Step Solution
- Step 1: Write the proportion equation
221,708,621.59 : 305,944,751.92 = 122,581,589.07 : x - Step 2: Convert to fraction form
221,708,621.59/305,944,751.92 = 122,581,589.07/x - Step 3: Cross multiply
221,708,621.59x = 305,944,751.92 × 122,581,589.07 - Step 4: Simplify right side
221,708,621.59x = 37,503,193,856,450,808 - Step 5: Solve for x
x = 37,503,193,856,450,808/221,708,621.59 - Step 6: Final answer
x = 169,155,324.62
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.