Finding the Fourth Proportional to 211,378.79, 291,702.66 and 115,883.44
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Solution
The fourth proportional to 211,378.79, 291,702.66 and 115,883.44 is: 159,919.10
Step by Step Solution
- Step 1: Write the proportion equation
211,378.79 : 291,702.66 = 115,883.44 : x - Step 2: Convert to fraction form
211,378.79/291,702.66 = 115,883.44/x - Step 3: Cross multiply
211,378.79x = 291,702.66 × 115,883.44 - Step 4: Simplify right side
211,378.79x = 33,803,506,239.44 - Step 5: Solve for x
x = 33,803,506,239.44/211,378.79 - Step 6: Final answer
x = 159,919.10
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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.