Home / 214,420.60-321,224.92-143,128.27

Finding the Fourth Proportional to 214,420.60, 321,224.92 and 143,128.27

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Solution

The fourth proportional to 214,420.60, 321,224.92 and 143,128.27 is: 214,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    214,420.60 : 321,224.92 = 143,128.27 : x
  2. Step 2: Convert to fraction form
    214,420.60/321,224.92 = 143,128.27/x
  3. Step 3: Cross multiply
    214,420.60x = 321,224.92 × 143,128.27
  4. Step 4: Simplify right side
    214,420.60x = 45,976,365,474.36
  5. Step 5: Solve for x
    x = 45,976,365,474.36/214,420.60
  6. Step 6: Final answer
    x = 214,421.41

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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.