Finding the Fourth Proportional to 211,389.51, 291,720.36 and 115,895.97
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Solution
The fourth proportional to 211,389.51, 291,720.36 and 115,895.97 is: 159,937.99
Step by Step Solution
- Step 1: Write the proportion equation
211,389.51 : 291,720.36 = 115,895.97 : x - Step 2: Convert to fraction form
211,389.51/291,720.36 = 115,895.97/x - Step 3: Cross multiply
211,389.51x = 291,720.36 × 115,895.97 - Step 4: Simplify right side
211,389.51x = 33,809,214,090.95 - Step 5: Solve for x
x = 33,809,214,090.95/211,389.51 - Step 6: Final answer
x = 159,937.99
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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.