Finding the Fourth Proportional to 239,982.96, 331,217.08 and 139,439.28
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Solution
The fourth proportional to 239,982.96, 331,217.08 and 139,439.28 is: 192,449.79
Step by Step Solution
- Step 1: Write the proportion equation
239,982.96 : 331,217.08 = 139,439.28 : x - Step 2: Convert to fraction form
239,982.96/331,217.08 = 139,439.28/x - Step 3: Cross multiply
239,982.96x = 331,217.08 × 139,439.28 - Step 4: Simplify right side
239,982.96x = 46,184,671,158.90 - Step 5: Solve for x
x = 46,184,671,158.90/239,982.96 - Step 6: Final answer
x = 192,449.79
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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.