Finding the Fourth Proportional to 211,156.72, 291,385.92 and 115,663.84
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Solution
The fourth proportional to 211,156.72, 291,385.92 and 115,663.84 is: 159,610.43
Step by Step Solution
- Step 1: Write the proportion equation
211,156.72 : 291,385.92 = 115,663.84 : x - Step 2: Convert to fraction form
211,156.72/291,385.92 = 115,663.84/x - Step 3: Cross multiply
211,156.72x = 291,385.92 × 115,663.84 - Step 4: Simplify right side
211,156.72x = 33,702,814,429.13 - Step 5: Solve for x
x = 33,702,814,429.13/211,156.72 - Step 6: Final answer
x = 159,610.43
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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.