Finding the Fourth Proportional to 398,782.88, 598,239.12 and 132,498.08
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Solution
The fourth proportional to 398,782.88, 598,239.12 and 132,498.08 is: 198,768.65
Step by Step Solution
- Step 1: Write the proportion equation
398,782.88 : 598,239.12 = 132,498.08 : x - Step 2: Convert to fraction form
398,782.88/598,239.12 = 132,498.08/x - Step 3: Cross multiply
398,782.88x = 598,239.12 × 132,498.08 - Step 4: Simplify right side
398,782.88x = 79,265,534,780.89 - Step 5: Solve for x
x = 79,265,534,780.89/398,782.88 - Step 6: Final answer
x = 198,768.65
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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.