Home / 409,370.10-613,836.45-143,139.30

Finding the Fourth Proportional to 409,370.10, 613,836.45 and 143,139.30

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Solution

The fourth proportional to 409,370.10, 613,836.45 and 143,139.30 is: 214,632.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,370.10 : 613,836.45 = 143,139.30 : x
  2. Step 2: Convert to fraction form
    409,370.10/613,836.45 = 143,139.30/x
  3. Step 3: Cross multiply
    409,370.10x = 613,836.45 × 143,139.30
  4. Step 4: Simplify right side
    409,370.10x = 87,864,119,767.49
  5. Step 5: Solve for x
    x = 87,864,119,767.49/409,370.10
  6. Step 6: Final answer
    x = 214,632.48

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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.