Finding the Fourth Proportional to 211,509.94, 291,878.46 and 120,860.14
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Solution
The fourth proportional to 211,509.94, 291,878.46 and 120,860.14 is: 166,783.99
Step by Step Solution
- Step 1: Write the proportion equation
211,509.94 : 291,878.46 = 120,860.14 : x - Step 2: Convert to fraction form
211,509.94/291,878.46 = 120,860.14/x - Step 3: Cross multiply
211,509.94x = 291,878.46 × 120,860.14 - Step 4: Simplify right side
211,509.94x = 35,276,471,538.58 - Step 5: Solve for x
x = 35,276,471,538.58/211,509.94 - Step 6: Final answer
x = 166,783.99
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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.