Finding the Fourth Proportional to 280,929.06, 420,989.40 and 120,961.08
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Solution
The fourth proportional to 280,929.06, 420,989.40 and 120,961.08 is: 181,267.59
Step by Step Solution
- Step 1: Write the proportion equation
280,929.06 : 420,989.40 = 120,961.08 : x - Step 2: Convert to fraction form
280,929.06/420,989.40 = 120,961.08/x - Step 3: Cross multiply
280,929.06x = 420,989.40 × 120,961.08 - Step 4: Simplify right side
280,929.06x = 50,923,332,492.55 - Step 5: Solve for x
x = 50,923,332,492.55/280,929.06 - Step 6: Final answer
x = 181,267.59
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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.