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Finding the Fourth Proportional to 555,044.35, 765,961.21 and 300,395.54

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Solution

The fourth proportional to 555,044.35, 765,961.21 and 300,395.54 is: 414,545.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,044.35 : 765,961.21 = 300,395.54 : x
  2. Step 2: Convert to fraction form
    555,044.35/765,961.21 = 300,395.54/x
  3. Step 3: Cross multiply
    555,044.35x = 765,961.21 × 300,395.54
  4. Step 4: Simplify right side
    555,044.35x = 230,091,329,278.87
  5. Step 5: Solve for x
    x = 230,091,329,278.87/555,044.35
  6. Step 6: Final answer
    x = 414,545.85

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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.