Home / 381,258.22-571,488.27-128,451.36

Finding the Fourth Proportional to 381,258.22, 571,488.27 and 128,451.36

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Solution

The fourth proportional to 381,258.22, 571,488.27 and 128,451.36 is: 192,542.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,258.22 : 571,488.27 = 128,451.36 : x
  2. Step 2: Convert to fraction form
    381,258.22/571,488.27 = 128,451.36/x
  3. Step 3: Cross multiply
    381,258.22x = 571,488.27 × 128,451.36
  4. Step 4: Simplify right side
    381,258.22x = 73,408,442,648.11
  5. Step 5: Solve for x
    x = 73,408,442,648.11/381,258.22
  6. Step 6: Final answer
    x = 192,542.58

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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.