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Finding the Fourth Proportional to 225,521.11, 311,101.13 and 139,452.58

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Solution

The fourth proportional to 225,521.11, 311,101.13 and 139,452.58 is: 192,371.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,521.11 : 311,101.13 = 139,452.58 : x
  2. Step 2: Convert to fraction form
    225,521.11/311,101.13 = 139,452.58/x
  3. Step 3: Cross multiply
    225,521.11x = 311,101.13 × 139,452.58
  4. Step 4: Simplify right side
    225,521.11x = 43,383,855,956.92
  5. Step 5: Solve for x
    x = 43,383,855,956.92/225,521.11
  6. Step 6: Final answer
    x = 192,371.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.