Finding the Fourth Proportional to 307,645.80, 461,468.70 and 278,121.30
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Solution
The fourth proportional to 307,645.80, 461,468.70 and 278,121.30 is: 417,181.95
Step by Step Solution
- Step 1: Write the proportion equation
307,645.80 : 461,468.70 = 278,121.30 : x - Step 2: Convert to fraction form
307,645.80/461,468.70 = 278,121.30/x - Step 3: Cross multiply
307,645.80x = 461,468.70 × 278,121.30 - Step 4: Simplify right side
307,645.80x = 128,344,274,753.31 - Step 5: Solve for x
x = 128,344,274,753.31/307,645.80 - Step 6: Final answer
x = 417,181.95
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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.