Finding the Fourth Proportional to 307,126,180.80, 421,578,078.48 and 271,539,316.80
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Solution
The fourth proportional to 307,126,180.80, 421,578,078.48 and 271,539,316.80 is: 372,729,615.92
Step by Step Solution
- Step 1: Write the proportion equation
307,126,180.80 : 421,578,078.48 = 271,539,316.80 : x - Step 2: Convert to fraction form
307,126,180.80/421,578,078.48 = 271,539,316.80/x - Step 3: Cross multiply
307,126,180.80x = 421,578,078.48 × 271,539,316.80 - Step 4: Simplify right side
307,126,180.80x = 114,475,023,408,316,000 - Step 5: Solve for x
x = 114,475,023,408,316,000/307,126,180.80 - Step 6: Final answer
x = 372,729,615.92
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.