Finding the Fourth Proportional to 261,749,347.20, 392,624,020.80 and 221,438,563.20
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Solution
The fourth proportional to 261,749,347.20, 392,624,020.80 and 221,438,563.20 is: 332,157,844.80
Step by Step Solution
- Step 1: Write the proportion equation
261,749,347.20 : 392,624,020.80 = 221,438,563.20 : x - Step 2: Convert to fraction form
261,749,347.20/392,624,020.80 = 221,438,563.20/x - Step 3: Cross multiply
261,749,347.20x = 392,624,020.80 × 221,438,563.20 - Step 4: Simplify right side
261,749,347.20x = 86,942,099,043,758,912 - Step 5: Solve for x
x = 86,942,099,043,758,912/261,749,347.20 - Step 6: Final answer
x = 332,157,844.80
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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.