Finding the Fourth Proportional to 343,874,238.80, 515,811,358.20 and 221,430,232.40
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Solution
The fourth proportional to 343,874,238.80, 515,811,358.20 and 221,430,232.40 is: 332,145,348.60
Step by Step Solution
- Step 1: Write the proportion equation
343,874,238.80 : 515,811,358.20 = 221,430,232.40 : x - Step 2: Convert to fraction form
343,874,238.80/515,811,358.20 = 221,430,232.40/x - Step 3: Cross multiply
343,874,238.80x = 515,811,358.20 × 221,430,232.40 - Step 4: Simplify right side
343,874,238.80x = 114,216,228,920,785,648 - Step 5: Solve for x
x = 114,216,228,920,785,648/343,874,238.80 - Step 6: Final answer
x = 332,145,348.60
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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.