Finding the Fourth Proportional to 168,440,431.20, 252,660,646.80 and 40,789,615.20
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Solution
The fourth proportional to 168,440,431.20, 252,660,646.80 and 40,789,615.20 is: 61,184,422.80
Step by Step Solution
- Step 1: Write the proportion equation
168,440,431.20 : 252,660,646.80 = 40,789,615.20 : x - Step 2: Convert to fraction form
168,440,431.20/252,660,646.80 = 40,789,615.20/x - Step 3: Cross multiply
168,440,431.20x = 252,660,646.80 × 40,789,615.20 - Step 4: Simplify right side
168,440,431.20x = 10,305,930,559,155,112 - Step 5: Solve for x
x = 10,305,930,559,155,112/168,440,431.20 - Step 6: Final answer
x = 61,184,422.80
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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.