Finding the Fourth Proportional to 228,927.63, 315,919.14 and 128,325.63
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Solution
The fourth proportional to 228,927.63, 315,919.14 and 128,325.63 is: 177,088.81
Step by Step Solution
- Step 1: Write the proportion equation
228,927.63 : 315,919.14 = 128,325.63 : x - Step 2: Convert to fraction form
228,927.63/315,919.14 = 128,325.63/x - Step 3: Cross multiply
228,927.63x = 315,919.14 × 128,325.63 - Step 4: Simplify right side
228,927.63x = 40,540,522,027.93 - Step 5: Solve for x
x = 40,540,522,027.93/228,927.63 - Step 6: Final answer
x = 177,088.81
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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.