Finding the Fourth Proportional to 438,626.58, 657,807.42 and 228,149.70
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Solution
The fourth proportional to 438,626.58, 657,807.42 and 228,149.70 is: 342,155.66
Step by Step Solution
- Step 1: Write the proportion equation
438,626.58 : 657,807.42 = 228,149.70 : x - Step 2: Convert to fraction form
438,626.58/657,807.42 = 228,149.70/x - Step 3: Cross multiply
438,626.58x = 657,807.42 × 228,149.70 - Step 4: Simplify right side
438,626.58x = 150,078,565,530.77 - Step 5: Solve for x
x = 150,078,565,530.77/438,626.58 - Step 6: Final answer
x = 342,155.66
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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.