Home / 381,024.60-571,332.70-128,221.03

Finding the Fourth Proportional to 381,024.60, 571,332.70 and 128,221.03

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Solution

The fourth proportional to 381,024.60, 571,332.70 and 128,221.03 is: 192,262.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,024.60 : 571,332.70 = 128,221.03 : x
  2. Step 2: Convert to fraction form
    381,024.60/571,332.70 = 128,221.03/x
  3. Step 3: Cross multiply
    381,024.60x = 571,332.70 × 128,221.03
  4. Step 4: Simplify right side
    381,024.60x = 73,256,867,266.68
  5. Step 5: Solve for x
    x = 73,256,867,266.68/381,024.60
  6. Step 6: Final answer
    x = 192,262.83

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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.