Finding the Fourth Proportional to 211,121.64, 291,332.70 and 115,612.92
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Solution
The fourth proportional to 211,121.64, 291,332.70 and 115,612.92 is: 159,537.53
Step by Step Solution
- Step 1: Write the proportion equation
211,121.64 : 291,332.70 = 115,612.92 : x - Step 2: Convert to fraction form
211,121.64/291,332.70 = 115,612.92/x - Step 3: Cross multiply
211,121.64x = 291,332.70 × 115,612.92 - Step 4: Simplify right side
211,121.64x = 33,681,824,138.48 - Step 5: Solve for x
x = 33,681,824,138.48/211,121.64 - Step 6: Final answer
x = 159,537.53
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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.