Finding the Fourth Proportional to 330,228,121.20, 495,342,181.80 and 136,039,579.80
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Solution
The fourth proportional to 330,228,121.20, 495,342,181.80 and 136,039,579.80 is: 204,059,369.70
Step by Step Solution
- Step 1: Write the proportion equation
330,228,121.20 : 495,342,181.80 = 136,039,579.80 : x - Step 2: Convert to fraction form
330,228,121.20/495,342,181.80 = 136,039,579.80/x - Step 3: Cross multiply
330,228,121.20x = 495,342,181.80 × 136,039,579.80 - Step 4: Simplify right side
330,228,121.20x = 67,386,142,269,287,216 - Step 5: Solve for x
x = 67,386,142,269,287,216/330,228,121.20 - Step 6: Final answer
x = 204,059,369.70
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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.