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Finding the Fourth Proportional to 279,919.17, 419,878.75 and 92,930.67

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Solution

The fourth proportional to 279,919.17, 419,878.75 and 92,930.67 is: 139,396.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,919.17 : 419,878.75 = 92,930.67 : x
  2. Step 2: Convert to fraction form
    279,919.17/419,878.75 = 92,930.67/x
  3. Step 3: Cross multiply
    279,919.17x = 419,878.75 × 92,930.67
  4. Step 4: Simplify right side
    279,919.17x = 39,019,613,556.26
  5. Step 5: Solve for x
    x = 39,019,613,556.26/279,919.17
  6. Step 6: Final answer
    x = 139,396.00

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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.