Home / 258,179.38-356,320.96-145,002.12

Finding the Fourth Proportional to 258,179.38, 356,320.96 and 145,002.12

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Solution

The fourth proportional to 258,179.38, 356,320.96 and 145,002.12 is: 200,121.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,179.38 : 356,320.96 = 145,002.12 : x
  2. Step 2: Convert to fraction form
    258,179.38/356,320.96 = 145,002.12/x
  3. Step 3: Cross multiply
    258,179.38x = 356,320.96 × 145,002.12
  4. Step 4: Simplify right side
    258,179.38x = 51,667,294,600.44
  5. Step 5: Solve for x
    x = 51,667,294,600.44/258,179.38
  6. Step 6: Final answer
    x = 200,121.69

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1.5x scale

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.