Finding the Fourth Proportional to 259,469,205.80, 389,203,808.70 and 86,888,661.80
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Solution
The fourth proportional to 259,469,205.80, 389,203,808.70 and 86,888,661.80 is: 130,332,992.70
Step by Step Solution
- Step 1: Write the proportion equation
259,469,205.80 : 389,203,808.70 = 86,888,661.80 : x - Step 2: Convert to fraction form
259,469,205.80/389,203,808.70 = 86,888,661.80/x - Step 3: Cross multiply
259,469,205.80x = 389,203,808.70 × 86,888,661.80 - Step 4: Simplify right side
259,469,205.80x = 33,817,398,105,406,196 - Step 5: Solve for x
x = 33,817,398,105,406,196/259,469,205.80 - Step 6: Final answer
x = 130,332,992.70
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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.