Finding the Fourth Proportional to 193,655,998.20, 290,483,997.30 and 72,471,703.80
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Solution
The fourth proportional to 193,655,998.20, 290,483,997.30 and 72,471,703.80 is: 108,707,555.70
Step by Step Solution
- Step 1: Write the proportion equation
193,655,998.20 : 290,483,997.30 = 72,471,703.80 : x - Step 2: Convert to fraction form
193,655,998.20/290,483,997.30 = 72,471,703.80/x - Step 3: Cross multiply
193,655,998.20x = 290,483,997.30 × 72,471,703.80 - Step 4: Simplify right side
193,655,998.20x = 21,051,870,210,965,600 - Step 5: Solve for x
x = 21,051,870,210,965,600/193,655,998.20 - Step 6: Final answer
x = 108,707,555.70
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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.