Finding the Fourth Proportional to 211,320.31, 291,621.42 and 115,826.71
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Solution
The fourth proportional to 211,320.31, 291,621.42 and 115,826.71 is: 159,840.53
Step by Step Solution
- Step 1: Write the proportion equation
211,320.31 : 291,621.42 = 115,826.71 : x - Step 2: Convert to fraction form
211,320.31/291,621.42 = 115,826.71/x - Step 3: Cross multiply
211,320.31x = 291,621.42 × 115,826.71 - Step 4: Simplify right side
211,320.31x = 33,777,549,644.13 - Step 5: Solve for x
x = 33,777,549,644.13/211,320.31 - Step 6: Final answer
x = 159,840.53
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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.