Home / 428,786.71-591,721.55-235,190.44

Finding the Fourth Proportional to 428,786.71, 591,721.55 and 235,190.44

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Solution

The fourth proportional to 428,786.71, 591,721.55 and 235,190.44 is: 324,560.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,786.71 : 591,721.55 = 235,190.44 : x
  2. Step 2: Convert to fraction form
    428,786.71/591,721.55 = 235,190.44/x
  3. Step 3: Cross multiply
    428,786.71x = 591,721.55 × 235,190.44
  4. Step 4: Simplify right side
    428,786.71x = 139,167,250,142.16
  5. Step 5: Solve for x
    x = 139,167,250,142.16/428,786.71
  6. Step 6: Final answer
    x = 324,560.55

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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.