Finding the Fourth Proportional to 221,339,573.99, 305,475,542.67 and 128,520,079.10
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Solution
The fourth proportional to 221,339,573.99, 305,475,542.67 and 128,520,079.10 is: 177,373,346.30
Step by Step Solution
- Step 1: Write the proportion equation
221,339,573.99 : 305,475,542.67 = 128,520,079.10 : x - Step 2: Convert to fraction form
221,339,573.99/305,475,542.67 = 128,520,079.10/x - Step 3: Cross multiply
221,339,573.99x = 305,475,542.67 × 128,520,079.10 - Step 4: Simplify right side
221,339,573.99x = 39,259,740,905,536,448 - Step 5: Solve for x
x = 39,259,740,905,536,448/221,339,573.99 - Step 6: Final answer
x = 177,373,346.30
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.