Finding the Fourth Proportional to 220,128,352.80, 330,192,529.20 and 90,669,325.20
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Solution
The fourth proportional to 220,128,352.80, 330,192,529.20 and 90,669,325.20 is: 136,003,987.80
Step by Step Solution
- Step 1: Write the proportion equation
220,128,352.80 : 330,192,529.20 = 90,669,325.20 : x - Step 2: Convert to fraction form
220,128,352.80/330,192,529.20 = 90,669,325.20/x - Step 3: Cross multiply
220,128,352.80x = 330,192,529.20 × 90,669,325.20 - Step 4: Simplify right side
220,128,352.80x = 29,938,333,808,645,296 - Step 5: Solve for x
x = 29,938,333,808,645,296/220,128,352.80 - Step 6: Final answer
x = 136,003,987.80
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1.5x scale
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.