Finding the Fourth Proportional to 220,332,621.90, 330,486,972.66 and 66,966,720.96
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Solution
The fourth proportional to 220,332,621.90, 330,486,972.66 and 66,966,720.96 is: 100,446,446.32
Step by Step Solution
- Step 1: Write the proportion equation
220,332,621.90 : 330,486,972.66 = 66,966,720.96 : x - Step 2: Convert to fraction form
220,332,621.90/330,486,972.66 = 66,966,720.96/x - Step 3: Cross multiply
220,332,621.90x = 330,486,972.66 × 66,966,720.96 - Step 4: Simplify right side
220,332,621.90x = 22,131,628,879,037,372 - Step 5: Solve for x
x = 22,131,628,879,037,372/220,332,621.90 - Step 6: Final answer
x = 100,446,446.32
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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.