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Finding the Fourth Proportional to 259,593.57, 389,388.60 and 139,706.94

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Solution

The fourth proportional to 259,593.57, 389,388.60 and 139,706.94 is: 209,559.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,593.57 : 389,388.60 = 139,706.94 : x
  2. Step 2: Convert to fraction form
    259,593.57/389,388.60 = 139,706.94/x
  3. Step 3: Cross multiply
    259,593.57x = 389,388.60 × 139,706.94
  4. Step 4: Simplify right side
    259,593.57x = 54,400,289,776.88
  5. Step 5: Solve for x
    x = 54,400,289,776.88/259,593.57
  6. Step 6: Final answer
    x = 209,559.47

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1.5x scale

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.