Finding the Fourth Proportional to 400,964.72, 553,195.08 and 228,758.98
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Solution
The fourth proportional to 400,964.72, 553,195.08 and 228,758.98 is: 315,609.66
Step by Step Solution
- Step 1: Write the proportion equation
400,964.72 : 553,195.08 = 228,758.98 : x - Step 2: Convert to fraction form
400,964.72/553,195.08 = 228,758.98/x - Step 3: Cross multiply
400,964.72x = 553,195.08 × 228,758.98 - Step 4: Simplify right side
400,964.72x = 126,548,338,332.05 - Step 5: Solve for x
x = 126,548,338,332.05/400,964.72 - Step 6: Final answer
x = 315,609.66
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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.