Finding the Fourth Proportional to 221,508,597.12, 305,688,031.56 and 122,395,764.48
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Solution
The fourth proportional to 221,508,597.12, 305,688,031.56 and 122,395,764.48 is: 168,909,562.89
Step by Step Solution
- Step 1: Write the proportion equation
221,508,597.12 : 305,688,031.56 = 122,395,764.48 : x - Step 2: Convert to fraction form
221,508,597.12/305,688,031.56 = 122,395,764.48/x - Step 3: Cross multiply
221,508,597.12x = 305,688,031.56 × 122,395,764.48 - Step 4: Simplify right side
221,508,597.12x = 37,414,920,315,172,568 - Step 5: Solve for x
x = 37,414,920,315,172,568/221,508,597.12 - Step 6: Final answer
x = 168,909,562.89
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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.