Finding the Fourth Proportional to 159,378.40, 239,011.84 and 47,028.80
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Solution
The fourth proportional to 159,378.40, 239,011.84 and 47,028.80 is: 70,526.75
Step by Step Solution
- Step 1: Write the proportion equation
159,378.40 : 239,011.84 = 47,028.80 : x - Step 2: Convert to fraction form
159,378.40/239,011.84 = 47,028.80/x - Step 3: Cross multiply
159,378.40x = 239,011.84 × 47,028.80 - Step 4: Simplify right side
159,378.40x = 11,240,440,020.99 - Step 5: Solve for x
x = 11,240,440,020.99/159,378.40 - Step 6: Final answer
x = 70,526.75
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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.