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Finding the Fourth Proportional to 467,757.07, 645,074.35 and 306,553.57

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Solution

The fourth proportional to 467,757.07, 645,074.35 and 306,553.57 is: 422,761.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,757.07 : 645,074.35 = 306,553.57 : x
  2. Step 2: Convert to fraction form
    467,757.07/645,074.35 = 306,553.57/x
  3. Step 3: Cross multiply
    467,757.07x = 645,074.35 × 306,553.57
  4. Step 4: Simplify right side
    467,757.07x = 197,749,844,907.93
  5. Step 5: Solve for x
    x = 197,749,844,907.93/467,757.07
  6. Step 6: Final answer
    x = 422,761.85

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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.