Finding the Fourth Proportional to 421,207.70, 631,686.75 and 121,690.96
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Solution
The fourth proportional to 421,207.70, 631,686.75 and 121,690.96 is: 182,500.38
Step by Step Solution
- Step 1: Write the proportion equation
421,207.70 : 631,686.75 = 121,690.96 : x - Step 2: Convert to fraction form
421,207.70/631,686.75 = 121,690.96/x - Step 3: Cross multiply
421,207.70x = 631,686.75 × 121,690.96 - Step 4: Simplify right side
421,207.70x = 76,870,565,675.73 - Step 5: Solve for x
x = 76,870,565,675.73/421,207.70 - Step 6: Final answer
x = 182,500.38
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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.