Finding the Fourth Proportional to 288,311.20, 432,121.20 and 147,997.60
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Solution
The fourth proportional to 288,311.20, 432,121.20 and 147,997.60 is: 221,818.99
Step by Step Solution
- Step 1: Write the proportion equation
288,311.20 : 432,121.20 = 147,997.60 : x - Step 2: Convert to fraction form
288,311.20/432,121.20 = 147,997.60/x - Step 3: Cross multiply
288,311.20x = 432,121.20 × 147,997.60 - Step 4: Simplify right side
288,311.20x = 63,952,900,509.12 - Step 5: Solve for x
x = 63,952,900,509.12/288,311.20 - Step 6: Final answer
x = 221,818.99
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1.5x scale
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.