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Finding the Fourth Proportional to 297,052.80, 445,469.44 and 128,597.76

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Solution

The fourth proportional to 297,052.80, 445,469.44 and 128,597.76 is: 192,849.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,052.80 : 445,469.44 = 128,597.76 : x
  2. Step 2: Convert to fraction form
    297,052.80/445,469.44 = 128,597.76/x
  3. Step 3: Cross multiply
    297,052.80x = 445,469.44 × 128,597.76
  4. Step 4: Simplify right side
    297,052.80x = 57,286,372,132.45
  5. Step 5: Solve for x
    x = 57,286,372,132.45/297,052.80
  6. Step 6: Final answer
    x = 192,849.12

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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.