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Finding the Fourth Proportional to 258,191.87, 356,297.67 and 143,467.54

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Solution

The fourth proportional to 258,191.87, 356,297.67 and 143,467.54 is: 197,981.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,191.87 : 356,297.67 = 143,467.54 : x
  2. Step 2: Convert to fraction form
    258,191.87/356,297.67 = 143,467.54/x
  3. Step 3: Cross multiply
    258,191.87x = 356,297.67 × 143,467.54
  4. Step 4: Simplify right side
    258,191.87x = 51,117,150,532.39
  5. Step 5: Solve for x
    x = 51,117,150,532.39/258,191.87
  6. Step 6: Final answer
    x = 197,981.26

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1.5x scale

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.