Finding the Fourth Proportional to 211,584.16, 291,945.36 and 136,122.40
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Solution
The fourth proportional to 211,584.16, 291,945.36 and 136,122.40 is: 187,822.68
Step by Step Solution
- Step 1: Write the proportion equation
211,584.16 : 291,945.36 = 136,122.40 : x - Step 2: Convert to fraction form
211,584.16/291,945.36 = 136,122.40/x - Step 3: Cross multiply
211,584.16x = 291,945.36 × 136,122.40 - Step 4: Simplify right side
211,584.16x = 39,740,303,072.06 - Step 5: Solve for x
x = 39,740,303,072.06/211,584.16 - Step 6: Final answer
x = 187,822.68
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1.5x scale
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.