Finding the Fourth Proportional to 245,735.70, 339,126.17 and 138,312.69
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Solution
The fourth proportional to 245,735.70, 339,126.17 and 138,312.69 is: 190,877.65
Step by Step Solution
- Step 1: Write the proportion equation
245,735.70 : 339,126.17 = 138,312.69 : x - Step 2: Convert to fraction form
245,735.70/339,126.17 = 138,312.69/x - Step 3: Cross multiply
245,735.70x = 339,126.17 × 138,312.69 - Step 4: Simplify right side
245,735.70x = 46,905,452,822.10 - Step 5: Solve for x
x = 46,905,452,822.10/245,735.70 - Step 6: Final answer
x = 190,877.65
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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.