Finding the Fourth Proportional to 220,168,420.80, 330,252,631.20 and 66,814,231.20
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Solution
The fourth proportional to 220,168,420.80, 330,252,631.20 and 66,814,231.20 is: 100,221,346.80
Step by Step Solution
- Step 1: Write the proportion equation
220,168,420.80 : 330,252,631.20 = 66,814,231.20 : x - Step 2: Convert to fraction form
220,168,420.80/330,252,631.20 = 66,814,231.20/x - Step 3: Cross multiply
220,168,420.80x = 330,252,631.20 × 66,814,231.20 - Step 4: Simplify right side
220,168,420.80x = 22,065,575,655,405,132 - Step 5: Solve for x
x = 22,065,575,655,405,132/220,168,420.80 - Step 6: Final answer
x = 100,221,346.80
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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.