Finding the Fourth Proportional to 439,900,128.80, 659,682,231.60 and 133,090,272.80
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Solution
The fourth proportional to 439,900,128.80, 659,682,231.60 and 133,090,272.80 is: 199,584,592.99
Step by Step Solution
- Step 1: Write the proportion equation
439,900,128.80 : 659,682,231.60 = 133,090,272.80 : x - Step 2: Convert to fraction form
439,900,128.80/659,682,231.60 = 133,090,272.80/x - Step 3: Cross multiply
439,900,128.80x = 659,682,231.60 × 133,090,272.80 - Step 4: Simplify right side
439,900,128.80x = 87,797,288,164,956,784 - Step 5: Solve for x
x = 87,797,288,164,956,784/439,900,128.80 - Step 6: Final answer
x = 199,584,592.99
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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.