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Finding the Fourth Proportional to 415,240.20, 622,629.90 and 165,640.20

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Solution

The fourth proportional to 415,240.20, 622,629.90 and 165,640.20 is: 248,368.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,240.20 : 622,629.90 = 165,640.20 : x
  2. Step 2: Convert to fraction form
    415,240.20/622,629.90 = 165,640.20/x
  3. Step 3: Cross multiply
    415,240.20x = 622,629.90 × 165,640.20
  4. Step 4: Simplify right side
    415,240.20x = 103,132,541,161.98
  5. Step 5: Solve for x
    x = 103,132,541,161.98/415,240.20
  6. Step 6: Final answer
    x = 248,368.39

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1.5x scale

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.