Finding the Fourth Proportional to 292,490.64, 438,738.12 and 92,811.60
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Solution
The fourth proportional to 292,490.64, 438,738.12 and 92,811.60 is: 139,218.09
Step by Step Solution
- Step 1: Write the proportion equation
292,490.64 : 438,738.12 = 92,811.60 : x - Step 2: Convert to fraction form
292,490.64/438,738.12 = 92,811.60/x - Step 3: Cross multiply
292,490.64x = 438,738.12 × 92,811.60 - Step 4: Simplify right side
292,490.64x = 40,719,986,898.19 - Step 5: Solve for x
x = 40,719,986,898.19/292,490.64 - Step 6: Final answer
x = 139,218.09
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.