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Finding the Fourth Proportional to 128,245.70, 192,379.48 and 33,488.48

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Solution

The fourth proportional to 128,245.70, 192,379.48 and 33,488.48 is: 50,235.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,245.70 : 192,379.48 = 33,488.48 : x
  2. Step 2: Convert to fraction form
    128,245.70/192,379.48 = 33,488.48/x
  3. Step 3: Cross multiply
    128,245.70x = 192,379.48 × 33,488.48
  4. Step 4: Simplify right side
    128,245.70x = 6,442,496,368.39
  5. Step 5: Solve for x
    x = 6,442,496,368.39/128,245.70
  6. Step 6: Final answer
    x = 50,235.57

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1.5x scale

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.