Finding the Fourth Proportional to 260,108.18, 390,199.43 and 80,208.80
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Solution
The fourth proportional to 260,108.18, 390,199.43 and 80,208.80 is: 120,324.65
Step by Step Solution
- Step 1: Write the proportion equation
260,108.18 : 390,199.43 = 80,208.80 : x - Step 2: Convert to fraction form
260,108.18/390,199.43 = 80,208.80/x - Step 3: Cross multiply
260,108.18x = 390,199.43 × 80,208.80 - Step 4: Simplify right side
260,108.18x = 31,297,425,688.94 - Step 5: Solve for x
x = 31,297,425,688.94/260,108.18 - Step 6: Final answer
x = 120,324.65
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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.