Finding the Fourth Proportional to 239,765,539.82, 330,876,440.91 and 129,757,252.82
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Solution
The fourth proportional to 239,765,539.82, 330,876,440.91 and 129,757,252.82 is: 179,065,006.70
Step by Step Solution
- Step 1: Write the proportion equation
239,765,539.82 : 330,876,440.91 = 129,757,252.82 : x - Step 2: Convert to fraction form
239,765,539.82/330,876,440.91 = 129,757,252.82/x - Step 3: Cross multiply
239,765,539.82x = 330,876,440.91 × 129,757,252.82 - Step 4: Simplify right side
239,765,539.82x = 42,933,617,993,686,280 - Step 5: Solve for x
x = 42,933,617,993,686,280/239,765,539.82 - Step 6: Final answer
x = 179,065,006.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.