Finding the Fourth Proportional to 330,861,643.20, 496,292,464.80 and 85,217,803.20
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Solution
The fourth proportional to 330,861,643.20, 496,292,464.80 and 85,217,803.20 is: 127,826,704.80
Step by Step Solution
- Step 1: Write the proportion equation
330,861,643.20 : 496,292,464.80 = 85,217,803.20 : x - Step 2: Convert to fraction form
330,861,643.20/496,292,464.80 = 85,217,803.20/x - Step 3: Cross multiply
330,861,643.20x = 496,292,464.80 × 85,217,803.20 - Step 4: Simplify right side
330,861,643.20x = 42,292,953,594,969,328 - Step 5: Solve for x
x = 42,292,953,594,969,328/330,861,643.20 - Step 6: Final answer
x = 127,826,704.80
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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.