Home / 454,408.92-681,615-138,864.52

Finding the Fourth Proportional to 454,408.92, 681,615 and 138,864.52

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Solution

The fourth proportional to 454,408.92, 681,615 and 138,864.52 is: 208,297.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,408.92 : 681,615 = 138,864.52 : x
  2. Step 2: Convert to fraction form
    454,408.92/681,615 = 138,864.52/x
  3. Step 3: Cross multiply
    454,408.92x = 681,615 × 138,864.52
  4. Step 4: Simplify right side
    454,408.92x = 94,652,139,799.80
  5. Step 5: Solve for x
    x = 94,652,139,799.80/454,408.92
  6. Step 6: Final answer
    x = 208,297.28

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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.