Finding the Fourth Proportional to 312,276,490.56, 430,800,245.28 and 188,477,593.92
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Solution
The fourth proportional to 312,276,490.56, 430,800,245.28 and 188,477,593.92 is: 260,013,789.53
Step by Step Solution
- Step 1: Write the proportion equation
312,276,490.56 : 430,800,245.28 = 188,477,593.92 : x - Step 2: Convert to fraction form
312,276,490.56/430,800,245.28 = 188,477,593.92/x - Step 3: Cross multiply
312,276,490.56x = 430,800,245.28 × 188,477,593.92 - Step 4: Simplify right side
312,276,490.56x = 81,196,193,690,520,224 - Step 5: Solve for x
x = 81,196,193,690,520,224/312,276,490.56 - Step 6: Final answer
x = 260,013,789.53
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.