Finding the Fourth Proportional to 299,383,471.80, 449,075,207.70 and 218,761,903.80
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Solution
The fourth proportional to 299,383,471.80, 449,075,207.70 and 218,761,903.80 is: 328,142,855.70
Step by Step Solution
- Step 1: Write the proportion equation
299,383,471.80 : 449,075,207.70 = 218,761,903.80 : x - Step 2: Convert to fraction form
299,383,471.80/449,075,207.70 = 218,761,903.80/x - Step 3: Cross multiply
299,383,471.80x = 449,075,207.70 × 218,761,903.80 - Step 4: Simplify right side
299,383,471.80x = 98,240,547,385,832,416 - Step 5: Solve for x
x = 98,240,547,385,832,416/299,383,471.80 - Step 6: Final answer
x = 328,142,855.70
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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.