Finding the Fourth Proportional to 211,157.20, 291,397.06 and 115,665.49
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Solution
The fourth proportional to 211,157.20, 291,397.06 and 115,665.49 is: 159,618.45
Step by Step Solution
- Step 1: Write the proportion equation
211,157.20 : 291,397.06 = 115,665.49 : x - Step 2: Convert to fraction form
211,157.20/291,397.06 = 115,665.49/x - Step 3: Cross multiply
211,157.20x = 291,397.06 × 115,665.49 - Step 4: Simplify right side
211,157.20x = 33,704,584,238.29 - Step 5: Solve for x
x = 33,704,584,238.29/211,157.20 - Step 6: Final answer
x = 159,618.45
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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.