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Finding the Fourth Proportional to 179,494.40, 268,658.40 and 139,836.80

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Solution

The fourth proportional to 179,494.40, 268,658.40 and 139,836.80 is: 209,300.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,494.40 : 268,658.40 = 139,836.80 : x
  2. Step 2: Convert to fraction form
    179,494.40/268,658.40 = 139,836.80/x
  3. Step 3: Cross multiply
    179,494.40x = 268,658.40 × 139,836.80
  4. Step 4: Simplify right side
    179,494.40x = 37,568,330,949.12
  5. Step 5: Solve for x
    x = 37,568,330,949.12/179,494.40
  6. Step 6: Final answer
    x = 209,300.85

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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.