Finding the Fourth Proportional to 239,152,103.20, 358,728,154.80 and 218,744,768.80
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Solution
The fourth proportional to 239,152,103.20, 358,728,154.80 and 218,744,768.80 is: 328,117,153.20
Step by Step Solution
- Step 1: Write the proportion equation
239,152,103.20 : 358,728,154.80 = 218,744,768.80 : x - Step 2: Convert to fraction form
239,152,103.20/358,728,154.80 = 218,744,768.80/x - Step 3: Cross multiply
239,152,103.20x = 358,728,154.80 × 218,744,768.80 - Step 4: Simplify right side
239,152,103.20x = 78,469,907,283,776,624 - Step 5: Solve for x
x = 78,469,907,283,776,624/239,152,103.20 - Step 6: Final answer
x = 328,117,153.20
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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.