Finding the Fourth Proportional to 258,439.29, 387,688.91 and 68,902.26
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Solution
The fourth proportional to 258,439.29, 387,688.91 and 68,902.26 is: 103,361.38
Step by Step Solution
- Step 1: Write the proportion equation
258,439.29 : 387,688.91 = 68,902.26 : x - Step 2: Convert to fraction form
258,439.29/387,688.91 = 68,902.26/x - Step 3: Cross multiply
258,439.29x = 387,688.91 × 68,902.26 - Step 4: Simplify right side
258,439.29x = 26,712,641,731.43 - Step 5: Solve for x
x = 26,712,641,731.43/258,439.29 - Step 6: Final answer
x = 103,361.38
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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.