Finding the Fourth Proportional to 427,058.11, 640,574.70 and 111,515.05
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Solution
The fourth proportional to 427,058.11, 640,574.70 and 111,515.05 is: 167,269.32
Step by Step Solution
- Step 1: Write the proportion equation
427,058.11 : 640,574.70 = 111,515.05 : x - Step 2: Convert to fraction form
427,058.11/640,574.70 = 111,515.05/x - Step 3: Cross multiply
427,058.11x = 640,574.70 × 111,515.05 - Step 4: Simplify right side
427,058.11x = 71,433,719,699.24 - Step 5: Solve for x
x = 71,433,719,699.24/427,058.11 - Step 6: Final answer
x = 167,269.32
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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.