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Finding the Fourth Proportional to 258,193.37, 356,299.74 and 143,469.05

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Solution

The fourth proportional to 258,193.37, 356,299.74 and 143,469.05 is: 197,983.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,193.37 : 356,299.74 = 143,469.05 : x
  2. Step 2: Convert to fraction form
    258,193.37/356,299.74 = 143,469.05/x
  3. Step 3: Cross multiply
    258,193.37x = 356,299.74 × 143,469.05
  4. Step 4: Simplify right side
    258,193.37x = 51,117,983,431.55
  5. Step 5: Solve for x
    x = 51,117,983,431.55/258,193.37
  6. Step 6: Final answer
    x = 197,983.33

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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.