Finding the Fourth Proportional to 221,435,686.20, 332,153,529.30 and 129,224,767.80
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Solution
The fourth proportional to 221,435,686.20, 332,153,529.30 and 129,224,767.80 is: 193,837,151.70
Step by Step Solution
- Step 1: Write the proportion equation
221,435,686.20 : 332,153,529.30 = 129,224,767.80 : x - Step 2: Convert to fraction form
221,435,686.20/332,153,529.30 = 129,224,767.80/x - Step 3: Cross multiply
221,435,686.20x = 332,153,529.30 × 129,224,767.80 - Step 4: Simplify right side
221,435,686.20x = 42,922,462,697,743,000 - Step 5: Solve for x
x = 42,922,462,697,743,000/221,435,686.20 - Step 6: Final answer
x = 193,837,151.70
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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.