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Finding the Fourth Proportional to 547,738.65, 755,874.21 and 306,062.85

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Solution

The fourth proportional to 547,738.65, 755,874.21 and 306,062.85 is: 422,363.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,738.65 : 755,874.21 = 306,062.85 : x
  2. Step 2: Convert to fraction form
    547,738.65/755,874.21 = 306,062.85/x
  3. Step 3: Cross multiply
    547,738.65x = 755,874.21 × 306,062.85
  4. Step 4: Simplify right side
    547,738.65x = 231,345,014,954.10
  5. Step 5: Solve for x
    x = 231,345,014,954.10/547,738.65
  6. Step 6: Final answer
    x = 422,363.87

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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.