Finding the Fourth Proportional to 247,390.36, 341,430.86 and 138,536.15
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Solution
The fourth proportional to 247,390.36, 341,430.86 and 138,536.15 is: 191,197.89
Step by Step Solution
- Step 1: Write the proportion equation
247,390.36 : 341,430.86 = 138,536.15 : x - Step 2: Convert to fraction form
247,390.36/341,430.86 = 138,536.15/x - Step 3: Cross multiply
247,390.36x = 341,430.86 × 138,536.15 - Step 4: Simplify right side
247,390.36x = 47,300,515,850.60 - Step 5: Solve for x
x = 47,300,515,850.60/247,390.36 - Step 6: Final answer
x = 191,197.89
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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.