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Finding the Fourth Proportional to 547,785.68, 755,939.04 and 306,109.88

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Solution

The fourth proportional to 547,785.68, 755,939.04 and 306,109.88 is: 422,428.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,785.68 : 755,939.04 = 306,109.88 : x
  2. Step 2: Convert to fraction form
    547,785.68/755,939.04 = 306,109.88/x
  3. Step 3: Cross multiply
    547,785.68x = 755,939.04 × 306,109.88
  4. Step 4: Simplify right side
    547,785.68x = 231,400,408,821.72
  5. Step 5: Solve for x
    x = 231,400,408,821.72/547,785.68
  6. Step 6: Final answer
    x = 422,428.73

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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.