Finding the Fourth Proportional to 217,332.37, 299,924.94 and 121,840.66
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Solution
The fourth proportional to 217,332.37, 299,924.94 and 121,840.66 is: 168,143.63
Step by Step Solution
- Step 1: Write the proportion equation
217,332.37 : 299,924.94 = 121,840.66 : x - Step 2: Convert to fraction form
217,332.37/299,924.94 = 121,840.66/x - Step 3: Cross multiply
217,332.37x = 299,924.94 × 121,840.66 - Step 4: Simplify right side
217,332.37x = 36,543,052,640.06 - Step 5: Solve for x
x = 36,543,052,640.06/217,332.37 - Step 6: Final answer
x = 168,143.63
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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.