Finding the Fourth Proportional to 198,000,905.20, 296,883,259.80 and 121,378,922.80
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Solution
The fourth proportional to 198,000,905.20, 296,883,259.80 and 121,378,922.80 is: 181,995,987.52
Step by Step Solution
- Step 1: Write the proportion equation
198,000,905.20 : 296,883,259.80 = 121,378,922.80 : x - Step 2: Convert to fraction form
198,000,905.20/296,883,259.80 = 121,378,922.80/x - Step 3: Cross multiply
198,000,905.20x = 296,883,259.80 × 121,378,922.80 - Step 4: Simplify right side
198,000,905.20x = 36,035,370,271,876,544 - Step 5: Solve for x
x = 36,035,370,271,876,544/198,000,905.20 - Step 6: Final answer
x = 181,995,987.52
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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.