Finding the Fourth Proportional to 193,214,487.20, 289,821,730.80 and 128,717,232.80
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Solution
The fourth proportional to 193,214,487.20, 289,821,730.80 and 128,717,232.80 is: 193,075,849.20
Step by Step Solution
- Step 1: Write the proportion equation
193,214,487.20 : 289,821,730.80 = 128,717,232.80 : x - Step 2: Convert to fraction form
193,214,487.20/289,821,730.80 = 128,717,232.80/x - Step 3: Cross multiply
193,214,487.20x = 289,821,730.80 × 128,717,232.80 - Step 4: Simplify right side
193,214,487.20x = 37,305,051,193,882,528 - Step 5: Solve for x
x = 37,305,051,193,882,528/193,214,487.20 - Step 6: Final answer
x = 193,075,849.20
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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.