Finding the Fourth Proportional to 256,988.68, 354,638.85 and 142,260.68
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Solution
The fourth proportional to 256,988.68, 354,638.85 and 142,260.68 is: 196,316.68
Step by Step Solution
- Step 1: Write the proportion equation
256,988.68 : 354,638.85 = 142,260.68 : x - Step 2: Convert to fraction form
256,988.68/354,638.85 = 142,260.68/x - Step 3: Cross multiply
256,988.68x = 354,638.85 × 142,260.68 - Step 4: Simplify right side
256,988.68x = 50,451,163,955.42 - Step 5: Solve for x
x = 50,451,163,955.42/256,988.68 - Step 6: Final answer
x = 196,316.68
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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.