Finding the Fourth Proportional to 318,676,496.80, 478,014,745.20 and 189,217,469.20
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Solution
The fourth proportional to 318,676,496.80, 478,014,745.20 and 189,217,469.20 is: 283,826,203.80
Step by Step Solution
- Step 1: Write the proportion equation
318,676,496.80 : 478,014,745.20 = 189,217,469.20 : x - Step 2: Convert to fraction form
318,676,496.80/478,014,745.20 = 189,217,469.20/x - Step 3: Cross multiply
318,676,496.80x = 478,014,745.20 × 189,217,469.20 - Step 4: Simplify right side
318,676,496.80x = 90,448,740,327,026,832 - Step 5: Solve for x
x = 90,448,740,327,026,832/318,676,496.80 - Step 6: Final answer
x = 283,826,203.80
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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.