Finding the Fourth Proportional to 358,790,643.80, 538,185,965.70 and 177,392,115.80
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Solution
The fourth proportional to 358,790,643.80, 538,185,965.70 and 177,392,115.80 is: 266,088,173.70
Step by Step Solution
- Step 1: Write the proportion equation
358,790,643.80 : 538,185,965.70 = 177,392,115.80 : x - Step 2: Convert to fraction form
358,790,643.80/538,185,965.70 = 177,392,115.80/x - Step 3: Cross multiply
358,790,643.80x = 538,185,965.70 × 177,392,115.80 - Step 4: Simplify right side
358,790,643.80x = 95,469,947,149,389,248 - Step 5: Solve for x
x = 95,469,947,149,389,248/358,790,643.80 - Step 6: Final answer
x = 266,088,173.70
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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.