Finding the Fourth Proportional to 211,136.88, 291,368.16 and 115,643.28
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Solution
The fourth proportional to 211,136.88, 291,368.16 and 115,643.28 is: 159,587.32
Step by Step Solution
- Step 1: Write the proportion equation
211,136.88 : 291,368.16 = 115,643.28 : x - Step 2: Convert to fraction form
211,136.88/291,368.16 = 115,643.28/x - Step 3: Cross multiply
211,136.88x = 291,368.16 × 115,643.28 - Step 4: Simplify right side
211,136.88x = 33,694,769,709.96 - Step 5: Solve for x
x = 33,694,769,709.96/211,136.88 - Step 6: Final answer
x = 159,587.32
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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.