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Finding the Fourth Proportional to 259,410.75, 389,128.08 and 79,483.29

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Solution

The fourth proportional to 259,410.75, 389,128.08 and 79,483.29 is: 119,228.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,410.75 : 389,128.08 = 79,483.29 : x
  2. Step 2: Convert to fraction form
    259,410.75/389,128.08 = 79,483.29/x
  3. Step 3: Cross multiply
    259,410.75x = 389,128.08 × 79,483.29
  4. Step 4: Simplify right side
    259,410.75x = 30,929,180,029.78
  5. Step 5: Solve for x
    x = 30,929,180,029.78/259,410.75
  6. Step 6: Final answer
    x = 119,228.60

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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.