Finding the Fourth Proportional to 245,735.20, 339,125.49 and 138,312.19
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Solution
The fourth proportional to 245,735.20, 339,125.49 and 138,312.19 is: 190,876.96
Step by Step Solution
- Step 1: Write the proportion equation
245,735.20 : 339,125.49 = 138,312.19 : x - Step 2: Convert to fraction form
245,735.20/339,125.49 = 138,312.19/x - Step 3: Cross multiply
245,735.20x = 339,125.49 × 138,312.19 - Step 4: Simplify right side
245,735.20x = 46,905,186,819.53 - Step 5: Solve for x
x = 46,905,186,819.53/245,735.20 - Step 6: Final answer
x = 190,876.96
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1.5x scale
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.