Finding the Fourth Proportional to 211,012.68, 291,118.01 and 138,455.63
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Solution
The fourth proportional to 211,012.68, 291,118.01 and 138,455.63 is: 191,016.60
Step by Step Solution
- Step 1: Write the proportion equation
211,012.68 : 291,118.01 = 138,455.63 : x - Step 2: Convert to fraction form
211,012.68/291,118.01 = 138,455.63/x - Step 3: Cross multiply
211,012.68x = 291,118.01 × 138,455.63 - Step 4: Simplify right side
211,012.68x = 40,306,926,422.72 - Step 5: Solve for x
x = 40,306,926,422.72/211,012.68 - Step 6: Final answer
x = 191,016.60
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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.