Finding the Fourth Proportional to 290,899,149.12, 401,449,343.84 and 158,748,660.96
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Solution
The fourth proportional to 290,899,149.12, 401,449,343.84 and 158,748,660.96 is: 219,077,800.57
Step by Step Solution
- Step 1: Write the proportion equation
290,899,149.12 : 401,449,343.84 = 158,748,660.96 : x - Step 2: Convert to fraction form
290,899,149.12/401,449,343.84 = 158,748,660.96/x - Step 3: Cross multiply
290,899,149.12x = 401,449,343.84 × 158,748,660.96 - Step 4: Simplify right side
290,899,149.12x = 63,729,545,777,870,624 - Step 5: Solve for x
x = 63,729,545,777,870,624/290,899,149.12 - Step 6: Final answer
x = 219,077,800.57
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.