Home / 427,227.12-640,840.68-174,626.46

Finding the Fourth Proportional to 427,227.12, 640,840.68 and 174,626.46

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Solution

The fourth proportional to 427,227.12, 640,840.68 and 174,626.46 is: 261,939.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,227.12 : 640,840.68 = 174,626.46 : x
  2. Step 2: Convert to fraction form
    427,227.12/640,840.68 = 174,626.46/x
  3. Step 3: Cross multiply
    427,227.12x = 640,840.68 × 174,626.46
  4. Step 4: Simplify right side
    427,227.12x = 111,907,739,372.39
  5. Step 5: Solve for x
    x = 111,907,739,372.39/427,227.12
  6. Step 6: Final answer
    x = 261,939.69

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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.