Finding the Fourth Proportional to 211,417.68, 291,756.48 and 115,922.40
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Solution
The fourth proportional to 211,417.68, 291,756.48 and 115,922.40 is: 159,972.96
Step by Step Solution
- Step 1: Write the proportion equation
211,417.68 : 291,756.48 = 115,922.40 : x - Step 2: Convert to fraction form
211,417.68/291,756.48 = 115,922.40/x - Step 3: Cross multiply
211,417.68x = 291,756.48 × 115,922.40 - Step 4: Simplify right side
211,417.68x = 33,821,111,377.15 - Step 5: Solve for x
x = 33,821,111,377.15/211,417.68 - Step 6: Final answer
x = 159,972.96
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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.