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Finding the Fourth Proportional to 303,367.40, 455,014.65 and 125,855.90

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Solution

The fourth proportional to 303,367.40, 455,014.65 and 125,855.90 is: 188,768.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,367.40 : 455,014.65 = 125,855.90 : x
  2. Step 2: Convert to fraction form
    303,367.40/455,014.65 = 125,855.90/x
  3. Step 3: Cross multiply
    303,367.40x = 455,014.65 × 125,855.90
  4. Step 4: Simplify right side
    303,367.40x = 57,266,278,288.94
  5. Step 5: Solve for x
    x = 57,266,278,288.94/303,367.40
  6. Step 6: Final answer
    x = 188,768.73

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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.