Finding the Fourth Proportional to 421,215.96, 631,883.36 and 136,815.44
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Solution
The fourth proportional to 421,215.96, 631,883.36 and 136,815.44 is: 205,242.46
Step by Step Solution
- Step 1: Write the proportion equation
421,215.96 : 631,883.36 = 136,815.44 : x - Step 2: Convert to fraction form
421,215.96/631,883.36 = 136,815.44/x - Step 3: Cross multiply
421,215.96x = 631,883.36 × 136,815.44 - Step 4: Simplify right side
421,215.96x = 86,451,399,927.08 - Step 5: Solve for x
x = 86,451,399,927.08/421,215.96 - Step 6: Final answer
x = 205,242.46
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.