Finding the Fourth Proportional to 246,351.78, 339,985.08 and 138,931.74
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Solution
The fourth proportional to 246,351.78, 339,985.08 and 138,931.74 is: 191,736.87
Step by Step Solution
- Step 1: Write the proportion equation
246,351.78 : 339,985.08 = 138,931.74 : x - Step 2: Convert to fraction form
246,351.78/339,985.08 = 138,931.74/x - Step 3: Cross multiply
246,351.78x = 339,985.08 × 138,931.74 - Step 4: Simplify right side
246,351.78x = 47,234,718,738.44 - Step 5: Solve for x
x = 47,234,718,738.44/246,351.78 - Step 6: Final answer
x = 191,736.87
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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.