Finding the Fourth Proportional to 220,018,918.80, 330,028,439.36 and 81,826,469.99
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Solution
The fourth proportional to 220,018,918.80, 330,028,439.36 and 81,826,469.99 is: 122,739,727.72
Step by Step Solution
- Step 1: Write the proportion equation
220,018,918.80 : 330,028,439.36 = 81,826,469.99 : x - Step 2: Convert to fraction form
220,018,918.80/330,028,439.36 = 81,826,469.99/x - Step 3: Cross multiply
220,018,918.80x = 330,028,439.36 × 81,826,469.99 - Step 4: Simplify right side
220,018,918.80x = 27,005,062,187,078,300 - Step 5: Solve for x
x = 27,005,062,187,078,300/220,018,918.80 - Step 6: Final answer
x = 122,739,727.72
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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.