Home / 381,199.77-571,789.94-100,719.45

Finding the Fourth Proportional to 381,199.77, 571,789.94 and 100,719.45

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Solution

The fourth proportional to 381,199.77, 571,789.94 and 100,719.45 is: 151,076.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,199.77 : 571,789.94 = 100,719.45 : x
  2. Step 2: Convert to fraction form
    381,199.77/571,789.94 = 100,719.45/x
  3. Step 3: Cross multiply
    381,199.77x = 571,789.94 × 100,719.45
  4. Step 4: Simplify right side
    381,199.77x = 57,590,367,768.74
  5. Step 5: Solve for x
    x = 57,590,367,768.74/381,199.77
  6. Step 6: Final answer
    x = 151,076.61

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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.