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Finding the Fourth Proportional to 367,676.44, 551,390.64 and 139,918

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Solution

The fourth proportional to 367,676.44, 551,390.64 and 139,918 is: 209,829.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,676.44 : 551,390.64 = 139,918 : x
  2. Step 2: Convert to fraction form
    367,676.44/551,390.64 = 139,918/x
  3. Step 3: Cross multiply
    367,676.44x = 551,390.64 × 139,918
  4. Step 4: Simplify right side
    367,676.44x = 77,149,475,567.52
  5. Step 5: Solve for x
    x = 77,149,475,567.52/367,676.44
  6. Step 6: Final answer
    x = 209,829.80

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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.