Home / 409,370.60-613,837.20-143,139.80

Finding the Fourth Proportional to 409,370.60, 613,837.20 and 143,139.80

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Solution

The fourth proportional to 409,370.60, 613,837.20 and 143,139.80 is: 214,633.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,370.60 : 613,837.20 = 143,139.80 : x
  2. Step 2: Convert to fraction form
    409,370.60/613,837.20 = 143,139.80/x
  3. Step 3: Cross multiply
    409,370.60x = 613,837.20 × 143,139.80
  4. Step 4: Simplify right side
    409,370.60x = 87,864,534,040.56
  5. Step 5: Solve for x
    x = 87,864,534,040.56/409,370.60
  6. Step 6: Final answer
    x = 214,633.23

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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.