Finding the Fourth Proportional to 257,474.34, 386,146.88 and 122,455.09
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Solution
The fourth proportional to 257,474.34, 386,146.88 and 122,455.09 is: 183,651.90
Step by Step Solution
- Step 1: Write the proportion equation
257,474.34 : 386,146.88 = 122,455.09 : x - Step 2: Convert to fraction form
257,474.34/386,146.88 = 122,455.09/x - Step 3: Cross multiply
257,474.34x = 386,146.88 × 122,455.09 - Step 4: Simplify right side
257,474.34x = 47,285,650,943.62 - Step 5: Solve for x
x = 47,285,650,943.62/257,474.34 - Step 6: Final answer
x = 183,651.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.