Finding the Fourth Proportional to 221,435,820.70, 332,153,731.05 and 129,224,902.30
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Solution
The fourth proportional to 221,435,820.70, 332,153,731.05 and 129,224,902.30 is: 193,837,353.45
Step by Step Solution
- Step 1: Write the proportion equation
221,435,820.70 : 332,153,731.05 = 129,224,902.30 : x - Step 2: Convert to fraction form
221,435,820.70/332,153,731.05 = 129,224,902.30/x - Step 3: Cross multiply
221,435,820.70x = 332,153,731.05 × 129,224,902.30 - Step 4: Simplify right side
221,435,820.70x = 42,922,533,443,516,728 - Step 5: Solve for x
x = 42,922,533,443,516,728/221,435,820.70 - Step 6: Final answer
x = 193,837,353.45
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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.